Question: Who sings the rap in Baby by the singer that Ryan dressed as on The Office?

full_context: Document 1: When I Was Your Man: ``When I Was Your Man ''was written by Andrew Wyatt, Bruno Mars, Philip Lawrence and Ari Levine, while production was handled by the latter three production - team The Smeezingtons. Having chord progressions Am - C - Dm - G - G7 - C (verse) and F-G-C (chorus), the song is written in the key of C Major, with Mars' vocals range from the low note of G3 to the high note of C5. The pop piano ballad finds Mars singing about a pre-fame heartbreak as he regrets letting his woman get away. It starts with a rolling piano riff; unto a nearly scat`` vocal cadence'': ``Same bed but it feels just a little bit bigger now / Our song on the radio but it do n't sound the same '', as he laments the`` single state'' he created for himself. Next, he sings of his failings; to do right by his woman, ``I shoulda bought you flowers / And held your hand / Shoulda gave you all my hours / When I had the chance ''. Its title phrase re-emerges in the final chorus, juxtaposed by Bruno from all the things he`` shoulda'' done, into things he hopes his ex's new man will do; concluding: ``Do all of the things I should have done / When I was your man ''. In an interview to Rolling Stone, Mars revealed, while reluctant, that he wrote the song for his girlfriend, model Jessica Caban, when he was worried about losing her. In contrast with the song, Mars and Caban stayed together; remaining a couple as of 2014. Mars also said, in the interview, that he finds it difficult to perform the song; saying:`` You're bringing up all these old emotions again,'' and that: ``It's just like bleeding! ''
Document 2: Baby (Justin Bieber song): 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... ''.
Document 3: Carnival: In Catalonia people dress in masks and costume (often in themed groups) and organize a week-long series of parties, pranks, outlandish activities such as bed races, street dramas satirizing public figures and raucous processions to welcome the arrival of Sa Majestat el Rei Carnestoltes (His Majesty King Carnival), known by various titles, including el Rei dels poca-soltes (King of the Crackpots), Princep etern de Cornudella (Eternal Prince of Cuckoldry), Duc de ximples i corrumputs (Duke of Fools and the Corrupt), Marquès de la bona mamella (Marquis of the lovely breast), Comte de tots els barruts (Count of the Insolent), Baró de les Calaverades (Baron of Nocturnal Debaucheries), and Senyor de l'alt Plàtan florit, dels barraquers i gamberrades i artista d'honor dalt del llit (Lord of the Tall Banana in Bloom, of the Voyeurs and Punks and the Artist of Honor upon the Bed).
Document 4: The Rocky Horror Picture Show: Tim Curry as Dr. Frank N. Furter, a scientist. Susan Sarandon as Janet Weiss, a heroine. Barry Bostwick as Brad Majors, a hero. Richard O'Brien as Riff Raff, a handyman. Patricia Quinn as Magenta, a domestic. Nell Campbell as Columbia, a groupie (credited as Little Nell). Jonathan Adams as Dr. Everett V. Scott, a rival scientist. Peter Hinwood as Rocky Horror, a creation. Meat Loaf as Eddie, an ex-delivery boy. Charles Gray as The Criminologist, an expert. Jeremy Newson as Ralph Hapschatt. Hilary Farr as Betty Munroe (credited as Hilary Labow).
Document 5: Baby Boy (Beyoncé song): "Baby Boy" is a song by American singer Beyoncé featuring Jamaican dancehall singer Sean Paul from Beyoncé's debut solo studio album "Dangerously in Love" (2003). Both artists co-wrote the song with Scott Storch, Robert Waller and Shawn "Jay-Z" Carter; the former also co-produced the song. Containing a lyrical interpolation of "No Fear" by hip hop group O.G.C, "Baby Boy" is an R&B and dancehall song with reggae and Arabic music influences; its lyrics detail a woman's fantasies.
Document 6: All Around the World (Justin Bieber song): "All Around the World" is a song by Canadian singer Justin Bieber, from his third studio album, "Believe" (2012). It was written by Bieber, Sir Nolan and Nasri of The Messengers in collaboration with Ludacris, who guest features. This was the second collaboration between Bieber and Ludacris, having previously collaborated on "Baby" (2010). It was first released on June 4, 2012, as a promotional single from the album. The song was released as the fourth international single, and the fifth and final US single on February 26, 2013. The Eurodance track features a similar instrumentation to songs by Britney Spears, Chris Brown and Usher. Lyrically, it features Bieber singing to his love interest that "all around the world, people want to be loved". "All Around the World" received mostly positive reviews from music critics, who welcomed the song's Eurodance style. The song had moderate success worldwide, reaching the top ten in several countries, such as Belgium, Canada and Norway. Bieber promoted the song through live performances and a music video.
Document 7: Somebody to Love (Justin Bieber song): "Somebody to Love" is a song performed by Canadian recording artist Justin Bieber. The song served as the second single from his album, "My World 2.0". It was written by Heather Bright and The Stereotypes, and produced by the latter. The song was originally recorded as a demo by Bieber's mentor, R&B singer, Usher, for his sixth studio album, "Raymond v. Raymond" (2010). After things went stale with Usher's label, The Stereotypes were encouraged to give the song to Bieber, who recorded it, with Usher performing background vocals. The song is an upbeat pop song, which also derives from R&B genre, while making use of Eurodisco influences. It impacted US mainstream and rhythmic radio on April 20, 2010. The remix of the song featuring Usher was featured on Bieber's first compilation album "" and his second remix album "".
Document 8: Baby (Justin Bieber song): Filming for the music video began during the week of January 25, 2010, in Los Angeles. It was filmed at Universal CityWalk by director Ray Kay, who had previously directed videos for Beyoncé Knowles, Lady Gaga, Alexandra Burke, and Cheryl Cole, among others. Ludacris said that the video ``is like a 2010 version of Michael Jackson's`` The Way You Make Me Feel ''.'' Bieber said that the video ``will capture the song's message of trying to woo back a girl. ''In explaining the concept of the video, Bieber said,`` It starts off, I really like this girl, but we did n't (get) along; we could n't be together. Basically I want her back and (I'm) kind of going through the whole thing. I'm chasing her around, trying to get her, and she's kind of playing hard to get, but I'm persistent. I keep going.'' The video premiered exclusively on Vevo on Friday, February 19, 2010. Singer and actress Jasmine Villegas portrays Bieber's love interest in the video. Bieber's friends, Young Money artists Drake and Lil Twist also appeared in the video, along with Tinashe and jerkin 'crew The Rangers.
Document 9: Professional wrestling: In Latin America and English-speaking countries, most wrestlers (and other on-stage performers) portray character roles, sometimes with personalities wildly different from their own. These personalities are a gimmick intended to heighten interest in a wrestler without regard to athletic ability. Some can be unrealistic and cartoon-like (such as Doink the Clown), while others carry more verisimilitude and can be seen as exaggerated versions of the performer's real life personality (such as Chris Jericho, The Rock, John Cena, Stone Cold Steve Austin, and CM Punk). In lucha libre, many characters wear masks, adopting a secret identity akin to a superhero, a near-sacred tradition.
Document 10: The Final Problem: Fans who call themselves "pilgrims" travel to Meiringen dressed as characters, both major and minor, from the Holmes stories. There, they take part in a reenactment of the events of "The Final Problem" organised by The Sherlock Holmes Society of London.
Document 11: Love Yourself: Lyrically, ``Love Yourself ''is a kiss - off to a narcissistic ex-lover who did the protagonist wrong, with Bieber singing in a snappy and spiteful tone while`` hating on a girl for loving herself too much.'' In the pre-chorus, he sings with a husky tone in the lower registers: ``My mama do n't like you, and she likes everyone, ''`` in a style that molds well to Sheeran's,'' according to Rolling Stone's Brittany Spanos. ``And I (never) like to admit that I was wrong. And I've been so caught up in my job, did n't see what's going on, and now I know, I'm better sleeping on my own, ''he continues. In the chorus, Bieber sings,`` Cause if you like the way you look that much, oh baby you should go and love yourself,'' which according to Digital Spy's Amy Davidson, ``'love yourself' means' go f * * k yourself 'in this context. ''On March 7, 2017, composer Ed Sheeran stated on the Howard Stern Show that he had Rihanna in mind for the song at first, and the original lyric was indeed`` fuck yourself.'' In the song's bridge, Bieber uses a ``brass - and - vocalese ''style.
Document 12: Stefon: Stefon's segments were inspired by real people Hader and Mulaney had encountered, including an email Mulaney had received recommending parties and other points of interest to him, and a barista at a coffee shop that Hader met who looked and talked like Stefon. Mulaney decided that Stefon should wear an Ed Hardy shirt, under the assumption that it was made of latex and looked like something out of the Macaulay Culkin and Seth Green film, Party Monster. Stefon's hair was inspired by the characters in that film, ``specifically based in popup club culture in New York City circa 2007 ''. Stefon's last regular appearance on SNL was on May 18, 2013, owing to Bill Hader's leaving the show. As part of the Weekend Update comedy skit, Seth Meyers realized how much he actually loved Stefon and`` married'' him.
Document 13: Spooked (The Office): The series -- presented as if it were a real documentary -- depicts the everyday lives of office employees in the Scranton, Pennsylvania, branch of the fictional Dunder Mifflin Paper Company. In the episode, Erin Hannon (Kemper) works to make a spooky, non-childish Halloween party with help from Gabe Lewis (Zach Woods). Dwight Schrute (Rainn Wilson) becomes friends with Robert California's (James Spader) son (David Mazouz), and Pam (Jenna Fischer) and Jim Halpert (John Krasinski) debate the existence of ghosts. Meanwhile, Robert figures out everyone's deepest fears and tries to culminate a ghost story.
Document 14: Costume Contest: Michael as MacGruber, then Darryl (Oscar's afro wig and a warehouse uniform) before changing back Dwight as ``The Scranton Strangler ''Jim as nothing, then Popeye Pam as Olive Oyl Ryan as Justin Bieber Andy as Bill Compton Stanley as a Samurai Warrior Kevin as Michael Moore Creed as a Mummy Meredith as Sookie Stackhouse Kelly as Snooki, then Nicki Minaj Erin as a hideous Monster Angela as a Penguin, then a sexy Nurse Toby as a Clown Hobo (reminiscent of Devon from the second season's Halloween episode) Oscar as a 70s pimp, then a`` rational consumer'' (but mistaken by Creed to be Edward James Olmos) Darryl as Dracula Phyllis as Supreme Court Justice Sonia Sotomayor Gabe as Lady Gaga Todd Packer as a pregnant Nun Bob Vance as Dirty Harry CeCe as Swee'Pea
Document 15: Darth Vader grotesque: In the 1980s, during the construction of the northwest tower, Christopher Rader won third - place in a National Geographic World magazine contest for children, with his drawing of Star Wars villain Darth Vader. The fierce head was sculpted by Jay Hall Carpenter and the stonecarver was Patrick J. Plunkett. The Darth Vader grotesque is difficult to see with the naked eye, and binoculars are generally needed to spot it.
ground_truth: Ludacris
sub_queries: who was ryan dressed as on the office Answer: Justin Bieber
who sings the rap in baby by Justin Bieber Answer: Ludacris