user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: What instruments are played by the artist of "If We Ever Meet Again"? 
Knowledge Triplets: Blackground Records, music.record_label.artist, Timbaland
Timbaland, music.artist.track_contributions, m.0qc84rg
Timbaland, music.artist.label, Blackground Records
Musical Release, freebase.type_profile.published, Published
Timbaland, music.artist.album, Textbook Timbo
If We Ever Meet Again, music.recording.releases, Pop Party 8
Timbaland, music.artist.contribution, m.0vxldwb
If We Ever Meet Again, music.recording.artist, Timbaland
Timbaland, music.artist.album, Welcome to Our World
If We Ever Meet Again, music.recording.tracks, If We Ever Meet Again (international radio edit)
Prism, music.album.artist, Katy Perry
m.0112jy2g, music.track_contribution.role, Vocals
m.0139s6c1, music.track_contribution.role, Vocals
Katy Perry, music.artist.album, Unconditionally
Katy Perry, music.artist.album, Thinking of You
Timbaland, music.artist.track_contributions, m.0sspwlh
Timbaland, music.artist.album, Throw It on Me
Katy Perry, music.featured_artist.recordings, Starstrukk
Timbaland, music.artist.track_contributions, m.011g_t32
Timbaland, music.artist.label, Mosley Music Group
Katy Perry, music.artist.album, Last Friday Night
Timbaland, music.artist.track_contributions, m.01290grt
Timbaland, music.artist.track_contributions, m.0rqt3c0
m.0vmxf2m, music.recording_contribution.contributor, Timbaland
m.010_zn74, music.track_contribution.role, Vocals
Katy Perry, music.artist.album, (A) Katy Perry
Katy Perry, music.artist.label, Interscope Records
4 Minutes, music.album.featured_artists, Timbaland
Timbaland, music.featured_artist.albums, 4 Minutes
Timbaland, music.artist.track_contributions, m.0rql84x
Katy Perry, music.artist.album, Waking Up in Vegas
Dark Horse, music.composition.composer, Katy Perry
If We Ever Meet Again, music.composition.composer, Jim Beanz
Timbaland, music.artist.contribution, m.0v_k022
Timbaland, music.artist.track_contributions, m.01389_0_
Katy Perry, music.featured_artist.recordings, Would You Care
Katy Perry, music.artist.track_contributions, m.0110dfb1
If We Ever Meet Again, music.recording.song, If We Ever Meet Again
m.01108mhc, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.012vf9ks
m.0vxlk34, music.recording_contribution.contributor, Timbaland
Musical Recording, type.type.expected_by, Recordings
m.012n6rpc, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0138cn4p
Timbaland, music.featured_artist.albums, Promiscuous
If We Ever Meet Again, music.recording.releases, Ö3 Greatest Hits 50
Timbaland, music.artist.album, Morning After Dark
Katy Perry, music.artist.album, Wide Awake
Timbaland, music.artist.track_contributions, m.0rrqfy7
Katy Perry, music.artist.label, Capitol Music Group
If We Ever Meet Again, music.recording.canonical_version, If We Ever Meet Again
Timbaland, music.artist.track_contributions, m.0rsfm31
Katy Perry, music.artist.album, MTV Unplugged
m.0slzwh9, music.track_contribution.role, Drums
Katy Perry, music.composer.compositions, This Is How We Do
Timbaland, music.artist.contribution, m.0v_k0qc
Katy Perry, music.featured_artist.recordings, Legends Never Die
Timbaland, music.group_member.instruments_played, Guitar
Timbaland, music.artist.contribution, m.0v_k1xy
Timbaland, music.artist.track_contributions, m.0nkbctv
Musical Recording, type.type.properties, Engineer
Timbaland, music.artist.track_contributions, m.012lzsjy
Bass guitar, music.instrument.family, Guitar
Timbaland, music.artist.contribution, m.0vn_bgh
Timbaland, music.artist.contribution, m.0vxlnzv
m.0z8rtp3, award.award_nomination.nominated_for, If We Ever Meet Again
m.0v_k022, music.recording_contribution.contributor, Timbaland
One of the Boys, music.album.genre, Alternative rock
Timbaland, music.artist.track_contributions, m.011s7zh5
Timbaland, music.artist.track_contributions, m.0rs_z0_
Timbaland, music.group_member.instruments_played, Keyboard
m.0nj18yz, music.track_contribution.track, If We Ever Meet Again (Digital Dog radio remix)
Katy Perry, music.composer.compositions, California Gurls
If We Ever Meet Again (Digital Dog radio remix), music.recording.song, If We Ever Meet Again
Timbaland, broadcast.artist.content, Playdio
Timbaland, music.artist.genre, Pop rock
Rap music, music.genre.artists, Timbaland
Katy Perry, music.composer.compositions, Not Like the Movies
m.0112jmzf, music.track_contribution.role, Guitar
Timbaland, music.artist.track_contributions, m.012g1951
m.01256qft, music.track_contribution.role, Vocals
Katy Perry, music.artist.genre, Electronic music
Musical Recording, type.type.expected_by, m.0kpvd8
Starstrukk, music.recording.featured_artists, Katy Perry
Katy Perry, music.featured_artist.recordings, Been There, Done That (feat. Trev)
Know Bout Me, music.album.artist, Timbaland
m.0rsfm31, music.track_contribution.role, Drums
If We Ever Meet Again, music.recording.artist, Katy Perry
m.0rsbm41, music.track_contribution.role, Vocals
m.012b2d_v, music.track_contribution.role, Vocals
m.0123g615, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0rqngfz
m.012qvcqr, music.track_contribution.role, Vocals
m.0f3_wkb, music.track_contribution.role, Guitar
Timbaland, music.artist.track_contributions, m.0snrzh3
busbee, music.artist.genre, Rock music
Katy Perry, music.artist.track_contributions, m.01106mtl
Katy Perry, music.artist.album, Circle the Drain
Timbaland, music.artist.track_contributions, m.0rssrmp
Katy Perry, music.artist.album, I Kissed a Girl
Timbaland, music.artist.contribution, m.0vxlk8w
m.0vmxf5x, music.recording_contribution.album, Return the Favor
Musician, people.profession.specializations, Keyboard Player
If We Ever Meet Again, music.recording.tracks, If We Ever Meet Again
m.011_t59w, music.track_contribution.role, Vocals
m.0112jmzf, music.track_contribution.role, Drums
m.011dt27f, music.track_contribution.role, Vocals
Broken, music.recording.featured_artists, Katy Perry
Timbaland, music.artist.album, Say Something
Musical Recording, type.type.properties, Length
Timbaland, music.artist.track_contributions, m.01342f_w
Timbaland, music.artist.track_contributions, m.01100yl0
m.0rw67qd, music.track_contribution.role, Vocals
Timbaland, music.artist.album, g.11b6vvz1ks
Katy Perry, music.artist.album, Birthday (Cash Cash remix)
Katy Perry, music.artist.album, Teenage Dream
Timbaland, music.artist.track_contributions, m.0nkbd3_
Musical Recording, common.topic.article, m.01z0mt6
m.013dzxf8, music.track_contribution.role, Vocals
Katy Perry, music.artist.album, The One That Got Away
Timbaland, music.artist.album, Shock Value II
m.01389_0_, music.track_contribution.role, Vocals
If We Ever Meet Again (Digital Dog radio remix), music.recording.featured_artists, Katy Perry
Ayo Technology, music.album.featured_artists, Timbaland
Timbaland, music.artist.track_contributions, m.0slzwh9
Timbaland, music.artist.contribution, m.0v_k1qt
Timbaland, music.featured_artist.albums, Missy Elliott
m.0vxljnw, music.recording_contribution.contributor, Timbaland
Timbaland, music.artist.track_contributions, m.0rf00lh
Jim Beanz, music.composer.compositions, If We Ever Meet Again
m.0110dfh7, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0rw67qd
Timbaland, music.artist.album, Opera Noir
If We Ever Meet Again, common.topic.notable_types, Musical Release
If We Ever Meet Again, music.recording.releases, Bravo Hits 69
m.012d8wcf, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.012b2d_v
m.0rr2870, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.012ywlqy
m.0nj18zj, music.track_contribution.role, Vocals
Musical Recording, type.type.properties, Tracks
Timbaland, music.artist.track_contributions, m.012d8wcf
Timbaland, music.artist.genre, Synthpop
Musical Recording, type.type.expected_by, Composer
Timbaland, music.artist.track_contributions, m.0qd83q_
Timbaland, music.featured_artist.albums, Elevator
m.013d44jz, music.track_contribution.role, Vocals
m.011wt2yq, music.track_contribution.role, Vocals
If We Ever Meet Again, music.recording.releases, Shock Value II
Timbaland, music.artist.track_contributions, m.012n6rpc
Blackground Records, music.record_label.artist, Timbaland & Magoo
Been There, Done That (feat. Trev), common.topic.notable_types, Musical Recording
Musical Release, type.type.properties, Tracks
One of the Boys, music.album.artist, Katy Perry
Timbaland, music.artist.track_contributions, m.0rr2870
The Island Def Jam Music Group, music.record_label.artist, Katy Perry
Timbaland, music.artist.track_contributions, m.011_t59w
Firework, music.composition.language, English Language
Katy Perry, music.featured_artist.recordings, Stay With Me
Timbaland, music.featured_artist.albums, Wait a Minute (feat. Timbaland)
Timbaland, music.artist.track_contributions, m.011wt2yq
Katy Perry, music.featured_artist.recordings, If We Ever Meet Again (Chew Fu Deja Fix)
Timbaland, common.topic.subject_of, Michael Jackson's 'Xscape' Album Is Eternal Greatness
Mannequin, music.composition.lyricist, Katy Perry
Take Back the Night, music.composition.composer, Timbaland
Timbaland, music.artist.track_contributions, m.0rf02n1
m.01109q2n, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.011dt27f
If We Ever Meet Again, music.composition.recordings, If We Ever Meet Again (Chew Fu Deja Fix)
Timbaland, music.artist.track_contributions, m.0rf01j4
Timbaland, music.artist.label, Roc Nation
If We Ever Meet Again, common.topic.article, m.09rvchx
Timbaland, music.artist.track_contributions, m.0rtcpk5
Timbaland, music.artist.track_contributions, m.0nkbcgv
m.0q6rq9j, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0shtx1t
Timbaland, music.artist.label, Interscope Records
m.0rf02n1, music.track_contribution.role, Drums
Timbaland, music.group_member.artists_supported, Bleona
Timbaland, music.artist.track_contributions, m.0flf7wl
Timbaland, music.artist.track_contributions, m.013dzxf8
Katy Perry, music.composer.compositions, Bullet
Timbaland, music.artist.track_contributions, m.0slyy2c
Katy Perry, music.artist.album, Walking on Air
If We Ever Meet Again, music.composition.recordings, If We Ever Meet Again (Starsmith remix)
Katy Perry, music.featured_artist.recordings, Broken
m.0110bszv, music.track_contribution.role, Vocals
If We Ever Meet Again, music.recording.contributions, m.0nj18zj
Timbaland, music.artist.genre, Pop music
Timbaland, music.artist.concert_tours, Shock Value II Tour
Timbaland, music.artist.genre, Hip hop soul
Timbaland, music.artist.track_contributions, m.0123g615
Timbaland, music.artist.album, If We Ever Meet Again
Katy Perry, music.artist.album, E.T.
Timbaland, music.artist.track_contributions, m.0112jmzf
Timbaland, music.artist.contribution, m.0vxlf1_
If We Ever Meet Again (Digital Dog radio remix), music.recording.releases, If We Ever Meet Again
Timbaland, music.artist.track_contributions, m.0sh_wns
Timbaland, music.artist.track_contributions, m.013c6g2j
Timbaland, music.artist.track_contributions, m.011tr864
Timbaland, music.artist.track_contributions, m.012h1lvp
Timbaland, music.artist.track_contributions, m.0rrp2pz
Musical Recording, type.type.expected_by, recordings
m.012vf9ks, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0q989kh
Timbaland, music.artist.track_contributions, m.0rqsy58
Timbaland, music.artist.genre, Alternative rock
m.0drxnbl, music.track_contribution.role, Drums
m.0vxlnzv, music.recording_contribution.contributor, Timbaland
Part II (On the Run), music.composition.lyricist, Timbaland
Timbaland, music.featured_artist.albums, Ayo Technology
Timbaland, music.artist.contribution, m.0vxlp5c
m.0rf00lh, music.track_contribution.role, Drums
Timbaland, music.artist.album, Apologize
Timbaland, music.artist.track_contributions, m.0rqwxy4
m.011s7zh5, music.track_contribution.role, Vocals
Timbaland, music.artist.genre, Pop
Timbaland, music.artist.genre, Rap music
Timbaland, music.artist.genre, Contemporary R&B
m.012lzsjy, music.track_contribution.contributor, Timbaland
If We Ever Meet Again (Digital Dog radio remix), common.topic.notable_types, Musical Recording
Timbaland, music.artist.track_contributions, m.0f3_wkb
m.0117fggl, music.track_contribution.role, Vocals
m.011067h_, music.track_contribution.role, Vocals
m.0rr2870, music.track_contribution.role, Drums
Katy Perry, music.artist.album, Roar
Katy Perry, music.artist.album, Hummingbird Heartbeat
m.0vxlfrf, music.recording_contribution.contributor, Timbaland
m.0rt40vc, music.track_contribution.role, Vocals
Wide Awake, music.album.artist, Katy Perry
Timbaland, music.artist.genre, Rock music
busbee, music.artist.genre, Pop music
Katy Perry, music.artist.album, PRISM (Acoustic Sessions)
Damn, music.recording.contributions, m.0nj18zf
If We Ever Meet Again, music.composition.recorded_as_album, If We Ever Meet Again
Bleona, music.artist.supporting_artists, Timbaland
Timbaland, music.artist.track_contributions, m.0rtkz6l
Timbaland, music.artist.contribution, m.0h4wrt4
Katy Perry, music.artist.album, Ur So Gay
One of the Boys, music.album.genre, Synthpop
If We Ever Meet Again, common.topic.notable_for, g.125f3xfft
One of the Boys, music.album.genre, Pop music
Katy Perry, music.composer.compositions, Dark Horse
Timbaland, music.artist.track_contributions, m.0rqqdg7
Katy Perry, music.artist.track_contributions, m.01108mhc
m.011307z_, music.track_contribution.role, Keyboard
Timbaland, music.group_member.instruments_played, Mandolin
Timbaland, music.artist.album, Scream
If We Ever Meet Again, music.recording.releases, Radio 538 Hitzone 53
m.0rrp2pz, music.track_contribution.role, Drums
Timbaland, music.featured_artist.albums, Coke Bottle
Katy Perry, music.artist.label, Capitol Records
Timbaland, music.artist.contribution, m.0v_k153
If We Ever Meet Again, music.track_contribution.track, m.0nj18zj
If We Ever Meet Again, music.single.versions, If We Ever Meet Again (Chew Fu Deja Fix)
Timbaland, music.featured_artist.albums, Amnesia
m.0120sfwr, music.track_contribution.contributor, Timbaland
Katy Perry, music.artist.album, Prism
If We Ever Meet Again (Digital Dog radio remix), music.recording.artist, Timbaland
m.0117j0s1, music.track_contribution.role, Vocals
m.0vxlr4s, music.recording_contribution.contributor, Timbaland
Guitar, music.instrument.variation, Bass guitar
Timbaland, music.artist.track_contributions, g.11c3jvfr8v
If We Ever Meet Again, common.topic.notable_for, g.1256y7mk8
m.0q989kh, music.track_contribution.role, Vocals
If We Ever Meet Again, common.topic.notable_types, Musical Recording
Timbaland, music.artist.contribution, m.0v_j_h4
m.0138cn4p, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.013d44jz
Drums, music.instrument.variation, Drums
Firework, music.composition.composer, Katy Perry
m.0vxlk8w, music.recording_contribution.contributor, Timbaland
Timbaland, music.featured_artist.albums, Dangerous
Katy Perry, music.artist.track_contributions, m.0110dfh7
m.0vxlf1_, music.recording_contribution.contributor, Timbaland
Timbaland, music.artist.genre, Hip hop music
Been There, Done That (feat. Trev), music.recording.artist, Katy Perry
Timbaland, music.featured_artist.albums, Get Involved
Part II (On the Run), music.composition.composer, Timbaland
m.011g_t32, music.track_contribution.role, Vocals
Mannequin, music.composition.composer, Katy Perry
If We Ever Meet Again, music.composition.composer, Timbaland
Choose Your Battles, music.recording.artist, Katy Perry
Timbaland, music.artist.album, Tim's Bio: Life from da Bassment
If We Ever Meet Again, music.recording.releases, If We Ever Meet Again
Starstrukk (Discotech remix), music.recording.featured_artists, Katy Perry
If We Ever Meet Again, music.composition.composer, busbee
Timbaland, music.artist.track_contributions, m.0rsbm41
m.013c6g2j, music.track_contribution.role, Vocals
m.01342f_w, music.track_contribution.role, Vocals
m.0sj7xh8, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0139s6c1
Timbaland, music.artist.track_contributions, m.012k8f7v
Rhythm and blues, music.genre.subgenre, Pop music
Timbaland, music.artist.album, Shock Value
Katy Perry, music.featured_artist.recordings, If We Ever Meet Again (Starsmith remix)
Timbaland, music.featured_artist.albums, Anonymous
Timbaland, music.artist.track_contributions, m.011n1dbf
If We Ever Meet Again, common.topic.notable_for, g.1yh9t42zm
Katy Perry, music.featured_artist.recordings, Dark Thunderhorse
Timbaland, music.artist.contribution, m.0vxlr4s
Timbaland, music.artist.track_contributions, m.0rtr3s6
Timbaland, music.artist.album, Marchin On
Timbaland, music.artist.label, Atlantic Records
Musical Recording, type.type.properties, Recorded by
Katy Perry, music.featured_artist.albums, If We Ever Meet Again
m.012lzsjy, music.track_contribution.role, Vocals
Music artist, people.profession.specialization_of, Musician
Teenage Dream, music.album.artist, Katy Perry
Starstrukk (Discotech remix), common.topic.notable_types, Musical Recording
m.0nj18z7, music.track_contribution.role, Vocals
Musical Recording, type.type.properties, Featured artists
Katy Perry, music.artist.album, California Gurls
Timbaland, music.artist.track_contributions, m.0rf02bh
KZON, broadcast.content.artist, Katy Perry
If We Ever Meet Again, music.recording.featured_artists, Katy Perry
Timbaland, music.artist.track_contributions, m.012__cth
Timbaland, music.artist.track_contributions, m.0nkbdrg
Timbaland, music.artist.track_contributions, m.0120sfwr
m.0nj18zf, music.track_contribution.role, Vocals
Timbaland, music.artist.label, Virgin Records
Timbaland, music.artist.contribution, m.0v_j_6l
m.0112jmzf, music.track_contribution.role, Keyboard
If We Ever Meet Again, music.single.versions, If We Ever Meet Again (Digital Dog radio remix)
If We Ever Meet Again (Digital Dog radio remix), music.recording.contributions, m.0nj18yz
Roc Nation, music.record_label.artist, Timbaland
Rhythm and blues, music.genre.subgenre, Contemporary R&B
Katy Perry, music.group_member.instruments_played, Guitar
Timbaland, music.artist.album, Break Ya Back
m.012d8wcf, music.track_contribution.contributor, Timbaland
If We Ever Meet Again (Digital Dog radio remix), music.recording.canonical_version, If We Ever Meet Again
One of the Boys, music.album.genre, Pop rock
Timbaland, music.artist.track_contributions, m.012s7d93
Michael Jackson's 'Xscape' Album Is Eternal Greatness, common.topic.subjects, Timbaland
Timbaland, music.artist.contribution, m.0vxlfrf
Timbaland, music.artist.track_contributions, m.011307z_
Timbaland, music.artist.contribution, m.0vxlkgy
Been There, Done That (feat. Trev), music.recording.contributions, m.0rrthml
Katy Perry, music.artist.album, Dark Horse
Katy Perry, music.composer.compositions, Mannequin
Timbaland, music.artist.origin, Virginia Beach
Timbaland, music.artist.track_contributions, m.01100ybv
Katy Perry, music.featured_artist.recordings, If We Ever Meet Again (Digital Dog radio remix)
Timbaland, music.artist.track_contributions, m.0skbgqw
Katy Perry, music.featured_artist.recordings, Starstrukk (Discotech remix)
Timbaland, music.featured_artist.albums, Return the Favor
Timbaland, music.artist.track_contributions, m.01256qft
Unconditionally, music.composition.language, English Language
Timbaland, music.artist.track_contributions, m.0nkbcp4
Timbaland, music.artist.album, The Best of Timbaland & Magoo
m.012k8f7v, music.track_contribution.role, Vocals
Been There, Done That (feat. Trev), music.recording.featured_artists, Katy Perry
Timbaland, music.artist.track_contributions, m.0drxnbl
Timbaland, music.artist.track_contributions, m.011ps_yk
Musical Recording, freebase.documented_object.documentation, m.01z0mt6
If We Ever Meet Again, music.recording.tracks, If We Ever Meet Again (feat. Katy Perry)
Katy Perry, music.featured_artist.recordings, Take a Walk
Katy Perry, music.artist.album, Teenage Dream: The Complete Confection
m.0rf00rd, music.track_contribution.role, Drums
Recorded by, rdf-schema#domain, Musical Recording
Timbaland, music.group_member.instruments_played, Drums
If We Ever Meet Again, music.single.versions, If We Ever Meet Again (Starsmith remix)
m.011tr864, music.track_contribution.role, Vocals
Timbaland, music.group_member.instruments_played, Bass guitar
If We Ever Meet Again, music.composition.recordings, If We Ever Meet Again
Walking on Air, music.album.artist, Katy Perry
One of the Boys, music.album.genre, Rock music
Timbaland, music.artist.contribution, m.0v_jztw
m.012ywlqy, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0rsz64l
busbee, music.composer.compositions, If We Ever Meet Again
Timbaland, common.topic.webpage, Points to the discogs page for this artist
Musician, people.profession.specializations, Music artist
Unconditionally, music.composition.composer, Katy Perry
Katy Perry, music.artist.album, Firework
One of the Boys, music.album.genre, Electronic music
If We Ever Meet Again, common.topic.notable_types, Composition
FuckWithMeYouKnowIGotIt, music.composition.lyricist, Timbaland
Timbaland, music.artist.album, Carry Out
Timbaland, music.artist.track_contributions, m.011kqznz
Katy Perry, music.composer.compositions, International Smile
Musical Recording, type.type.expected_by, Playlist
Musical Recording, type.type.properties, Lyrics Website
If We Ever Meet Again, award.award_nominated_work.award_nominations, m.0z8rtp3
Katy Perry, music.composer.compositions, It Takes Two
m.011n1dbf, music.track_contribution.role, Vocals
Timbaland, music.artist.contribution, m.0vmxf2m
Timbaland, music.artist.album, Pass at Me
Timbaland, music.artist.track_contributions, m.0136m2tk
m.0v_k0qc, music.recording_contribution.album, Anonymous
Katy Perry, music.artist.label, Virgin Records
Katy Perry, music.artist.album, Not Like the Movies
Timbaland, music.artist.genre, Electronica
Timbaland, music.artist.contribution, m.0vmxf5x
Timbaland, music.artist.track_contributions, m.0sq8r0p
Know Bout Me, music.composition.composer, Timbaland
Damn, music.recording.featured_artists, Katy Perry
m.0vxldwb, music.recording_contribution.contributor, Timbaland
m.0h4wrt4, music.recording_contribution.contributor, Timbaland
Timbaland, music.artist.genre, Rhythm and blues
Katy Perry, music.artist.album, One of the Boys
Timbaland, music.artist.track_contributions, m.0smjbnz
m.012g1951, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0117fggl
Timbaland, music.artist.track_contributions, m.0rt40vc
m.011kqznz, music.track_contribution.role, Vocals
m.0nj18zj, music.track_contribution.track, If We Ever Meet Again
Musical Recording, type.type.properties, Releases
Timbaland, music.artist.genre, Alternative hip hop
m.0120sfwr, music.track_contribution.role, Vocals
If We Ever Meet Again, common.topic.notable_for, g.1yg99wrn9
m.0nj18yz, music.track_contribution.role, Vocals
If We Ever Meet Again, music.composition.recordings, If We Ever Meet Again (Digital Dog radio remix)
Timbaland, music.artist.album, Here We Come
m.0vxlp5c, music.recording_contribution.contributor, Timbaland
Katy Perry, music.artist.album, Part of Me (remix)
m.012h1lvp, music.track_contribution.role, Vocals
Timbaland, music.artist.album, Know Bout Me
Katy Perry, music.artist.album, Part of Me
Timbaland, music.artist.contribution, m.0vxlk34
Katy Perry, music.featured_artist.recordings, If We Ever Meet Again
Take a Walk, music.recording.featured_artists, Katy Perry
m.0136m2tk, music.track_contribution.role, Vocals
Katy Perry, music.artist.album, Katy Hudson
Katy Perry, music.artist.album, Peacock
m.0126_jwg, music.track_contribution.role, Vocals
Bleona, music.artist.genre, Rhythm and blues
Timbaland, music.artist.track_contributions, m.0126_jwg
Timbaland, music.artist.track_contributions, m.0rqp9dd
Timbaland, music.artist.track_contributions, m.012qvcqr
Katy Perry, music.artist.genre, Disco
FuckWithMeYouKnowIGotIt, music.composition.composer, Timbaland
Timbaland, music.artist.contribution, m.0vxljnw
m.01106mtl, music.track_contribution.role, Vocals
Timbaland, music.artist.genre, Electro house
Katy Perry, music.composer.compositions, Ghost
Drums, music.instrument.family, Drums
Timbaland, music.artist.album, Greatest Remixes, Volume 1
Katy Perry, music.featured_artist.recordings, Damn
Katy Perry, music.artist.label, Columbia
Timbaland, music.artist.track_contributions, m.0rf00rd
Timbaland, music.artist.album, Give It to Me
Katy Perry, music.composer.compositions, Legendary Lovers
If We Ever Meet Again, music.recording.tracks, If We Ever Meet Again (International radio edit)
Timbaland, music.artist.track_contributions, m.0f3n600
Timbaland, film.music_contributor.film, 30 Years to Life
If We Ever Meet Again, music.single.versions, If We Ever Meet Again
m.01290grt, music.track_contribution.role, Vocals
Timbaland, music.artist.track_contributions, m.0sj7xh8
Musical Recording, freebase.type_profile.published, Published
Timbaland, music.artist.genre, Trip hop
Katy Perry, music.artist.label, Island Records
Timbaland, music.featured_artist.albums, 9th Inning
Timbaland, music.artist.album, The Way I Are
m.012s7d93, music.track_contribution.role, Vocals
m.0slzwh9, music.track_contribution.role, Vocals
Katy Perry, music.composer.compositions, Firework
Timbaland, music.artist.track_contributions, m.0nkbcyq
Starstrukk, music.recording.artist, Katy Perry

Answer: Vocals