paragraph_text: The song is predominantly upbeat, featuring Bieber's R&B vocals over a backdrop containing a dance infused beat, full of keyboard and ``disco string ''synths. The song is composed in the key of E ♭ major with Bieber's vocal range spanning from the low - note of G to the high - note of C. According to Jody Rosen of Rolling Stone, the song`` blends winks at Fifties doo - wop with hip - hop chants'', comparing the style and the lyrics ``My first love broke my heart for the first time / And I was like / Baby, baby, baby, ooooh / I thought you'd always be mine ''to fifties ballads like`` Tears on My Pillow'', ``Why Do Fools Fall in Love ''and`` Earth Angel''. Lyrically, Bieber's lines explain his distress over his lost love, and promise to get it back, featured in lines like, ``And I wan na play it cool / But I'm losin 'you... / I'm in pieces / So come and fix me... ''. The chorus features the distinct and repetitive`` baby, baby, baby, ohhhh (nooooo)'' hook. After the second verse, Ludacris comes in with the verse - rap, an anecdote of young love when he was thirteen, as it runs ``When I was 13 / I had my first love / She had me going crazy / Oh, I was star - struck / She woke me up daily / Do n't need no Starbucks... ''.

paragraph_text: ``U Ca n't Touch This ''Single by MC Hammer from the album Please Hammer, Do n't Hurt 'Em B - side`` Dancin' Machine'' Released January 13, 1990 Format 12 ''vinyl 7'' vinyl CD single cassette Recorded Genre Hip hop pop - rap Length 4: 16 Label Capitol (US) Songwriter (s) Stanley Burrell Rick James Alonzo Miller Producer (s) MC Hammer MC Hammer singles chronology ``They Put Me in the Mix ''(1989)`` U Ca n't Touch This'' (1990) ``Have You Seen Her ''(1990)`` They Put Me in the Mix'' (1989) ``U Ca n't Touch This ''(1990)`` Have You Seen Her'' (1990) Music video ``U Ca n't Touch This ''on YouTube

paragraph_text: "U Smile" is a song performed by Canadian recording artist Justin Bieber. It was written by Jerry Duplessis, Arden Altino, and Dan August Rigo, and produced by Duplessis and Altino. According to Bieber, the song is dedicated to his special fans. The song was released as the second digital-only single from the latter half of Bieber's debut album on March 16, 2010. It was released to mainstream radio in Canada on August 9, 2010, followed by a mainstream and rhythmic release on August 24, 2010, in the United States as the album's third single there.

paragraph_text: Brasse Vannie Kaap (BVK) was a hip-hop group that hailed from the Cape Flats in Cape Town, South Africa. They rapped in predominantly in the Cape Flats dialect of Afrikaans. The original line-up included Deon Daniels (Boeta-D), Roger Heunis (Hamma), Ashley Titus (Mr Fat) and Enver Pietersen (DJ E20). Bboys Cheeze, Baby-L and Levi joined the group soon after they started to perform live.

paragraph_text: Throughout 2011 -- 16, Minaj has been nominated for a total of 10 Grammy Awards. She received her first Grammy nomination in 2011 in the category Best Rap Performance by a Duo or Group for the single ``My Chick Bad ''with fellow rapper Ludacris at the 53rd ceremony. For the 54th Grammy Awards in 2012, Minaj received nominations for Best New Artist and Best Rap Album for her debut album Pink Friday, and Best Rap Performance for her single`` Moment 4 Life'' featuring Drake. In 2015, Minaj received two nominations at the 57th Grammy Awards for Best Rap Song for her single ``Anaconda ''and Best Pop Duo / Group Performance for her joint single`` Bang Bang'', with Jessie J and Ariana Grande. For the 58th Grammy Awards in 2016, Minaj received three nominations, including Best Rap Album for her third studio album The Pinkprint.

paragraph_text: "Let the Heartaches Begin" is a song performed by British singer Long John Baldry. The single was a number one hit in the UK Singles Chart on 22 November 1967 where it stayed for two weeks. It was the second of two consecutive UK number one hits for the writing partnership of Tony Macaulay and John Macleod, the first being "Baby Now That I've Found You" by The Foundations. Macaulay says of the recording session "Long John Baldry sings it extraordinarily well, thanks to three-quarters of a bottle of Courvoisier".

paragraph_text: The eighth series was won by boy band Collabro, with opera singer Lucy Kay finishing in second place and singing / rapping duo Bars and Melody in third place. During its broadcast, the series averaged around 9.8 million viewers.

paragraph_text: Ian Frederick Oshodi (born 30 March 1986), better known by his stage name Ian Jazzi, is a Ghanaian/Nigerian recording artist, performer, record producer, actor, poet, model and entrepreneur. He pioneered a new wave of Gospel Rap in Ghana, after dropping popular singles "Get Some" and "Get Your Clap On" in 2003. Both were produced by Jayso. He is also credited with being among the pioneers of GH Rap which is a term to denote 'Hiphop made in Ghana'.

paragraph_text: ``I Still Call Australia Home ''is a song written and performed by Peter Allen in 1980. In it, Allen sings of Australian expatriates' longing for home.

paragraph_text: Referred to as a ``stoner rap ''by AllMusic's Stephen Thomas Erlewine, the lyrics are mostly nonsensical. The song's chorus, in which Beck sings the lines`` Soy un perdedor / I'm a loser baby, so why do n't you kill me?'', is often interpreted as a parody of Generation X's ``slacker ''culture. Beck has denied the validity of this meaning, instead saying that the chorus is simply about his lack of skill as a rapper. Jon Pareles wrote in The New York Times that`` The sentiment of 'Loser' (...) reflects the twentysomething trademark, a mixture of self - mockery and sardonic defiance'', noting Beck's ``offhand vocal tone and free - associative lyrics ''and comparing his vocals to`` Bob Dylan talk - singing''. After its recording, Beck thought that the song was interesting but unimpressive. He later said, ``The raps and vocals are all first takes. If I'd known the impact it was going to make, I would have put something a little more substantial in it. ''The relationship between Beck and Stephenson soured after the release of`` Loser'' as a single. Stephenson regretted his involvement in creating the song, in particular the ``negative ''lyrics, saying`` I feel bad about it. It's not Beck the person, it's the words. I just wish I could have been more of a positive influence.''

paragraph_text: ``U Ca n't Touch This ''Single by MC Hammer from the album Please Hammer, Do n't Hurt 'Em B - side`` Dancin' Machine'' Released January 13, 1990 Format 12 ''vinyl 7'' vinyl CD single cassette Recorded Genre Hip hop pop - rap Length 4: 16 Label Capitol (US) Songwriter (s) Stanley Burrell Rick James Alonzo Miller Producer (s) MC Hammer MC Hammer singles chronology ``They Put Me in the Mix ''(1989)`` U Ca n't Touch This'' (1990) ``Have You Seen Her ''(1990) Music video`` U Ca n't Touch This'' on YouTube

paragraph_text: "Xxplosive" is a song by Dr. Dre from his album 2001. The song is number 6 in the track listing of the album. "Xxplosive" features Kurupt, Hittman, and Six-Two on the verses and Nate Dogg singing the chorus. The track is heavily based upon the song "Bumpy's Lament" by Soul Mann & The Brothers.The original title of the song was "The Way I Be Pimpin," which featured Royce da 5'9" on the chorus and Dre rapping the verses.

paragraph_text: ``Sing for the Moment ''contains samples of the song`` Dream On'' by the rock band Aerosmith. Joe Perry plays the guitar solo at the end of the song, and a sample of Steven Tyler singing is used as the chorus for this song. Eminem chants ``sing ''when Tyler starts to sing the chorus, and Eminem also chants`` sing with me'' and ``come on ''. Eminem says the words in his live performances as well. The beginning of the song samples the intro of`` Dream On''. ``Sing for the Moment ''was later released on Eminem's greatest hits compilation album Curtain Call: The Hits (2005).

paragraph_text: "Put On" is a song written and performed by American rapper Young Jeezy and hip hop recording artist Kanye West, taken from the former's third studio album, "The Recession". The song was released as the album's lead single on June 3, 2008. The song received a Grammy nomination for Best Rap Performance by a Duo or Group.

paragraph_text: Smile Smile was an American folk pop indie rock band based in Dallas, Texas. The band is made up of Jencey Hirunrusme (piano and vocals) and Ryan Hamilton (guitar and vocals). At various times Smile Smile has played with a variety of drummers including Jeff Gilroy (Red Monroe), Michael Ratliff (Calhoun, Odis) and Cooper Heffley (Little Black Dress).

paragraph_text: In 1973 Monro released a vocal version of the popular Van der Valk TV - series theme titled ``And You Smiled '', with lyrics written by Melvyn Taggart. It was his final hit. In 1977, he recorded the Don Black penned,`` If I Never Sing Another Song'', which became a latter - day standard among his contemporaries, its lyrics referring to the ``heyday ''of fan mail, awards, and other trappings of celebrity that had faded for them.

paragraph_text: Marti Pellow Sings the Hits of Wet Wet Wet & Smile is a compilation/cover album by Wet Wet Wet frontman Marti Pellow. The album contains re-recordings of Wet Wet Wet hits. It was released on 18 November 2002.

paragraph_text: Hi-Teknology is the debut album from producer Hi-Tek, released on Rawkus Records. Most songs feature rapping or singing by other artists, and all are produced by Hi-Tek. A sequel, "Hi-Teknology 2", was made for MCA Records but never released; a second "Hi-Teknology 2" was recorded and released on Babygrande Records.

paragraph_text: Blood of the Profit is the fourth album by emcee Professor Griff, which was released on August 18, 1998, on Lethal/Blackheart/Mercury/PolyGram Records and was produced by Professor Griff and his Public Enemy bandmate Chuck D. The album did not make it to the billboard charts. However, the single "The Ole Bitch-U-Worryz," which featured Chuck D, managed to make it to #16 on the Hot Rap Singles and #66 on the Hot R&B/Hip-Hop Singles & Tracks.

paragraph_text: "Crazy Rap", also known as "Colt 45 and 2 Zig Zags" or simply "Colt 45", is a dirty rap single recorded by rapper Afroman. It was featured on his third album, "Sell Your Dope", and was later included on his greatest hits album, "The Good Times". It is often referred to as "Colt 45", as the hook states "Colt 45 and two zig-zags, baby that's all we need". The song failed to replicate the success of its predecessor but it nonetheless still charted across Europe, reaching the top 10 in the UK.

Question: Who sings the rap in baby by U Smile's performer?
Answer: Ludacris