Question: Young & Sexy featured a guest appearance from an American rapper who was born in Harlem, NY, and was formerly signed to P. Diddy's record label, known as what?

Context paragraphs:
T.I. discography: American rapper T.I. has released nine studio albums, one remix album, five extended plays (EPs), 13 mixtapes, 110 singles (including 61 as a featured artist) and 11 promotional singles.  He has also released one music video album and over 60 music videos, the details of which are included in his videography.  Throughout his career, T.I.'s music has been released on several record labels, including Artista and Atlantic, as well as his own label imprint, Grand Hustle Records.  T.I. has also served as an executive producer for several projects other than his own, including Big Kuntry King's debut "My Turn to Eat" (2008), B.G.'s "Too Hood 2 Be Hollywood" (2009), B.o.B's debut "The Adventures of Bobby Ray" (2010) and Iggy Azalea's debut EP "Glory" (2012), as well as her debut album "The New Classic" (2014).  In 2005, T.I. had executive produced the soundtrack to the film "Hustle & Flow" and released the collection through his record label.  T.I. is also a noted record producer, having produced several song recordings, a few under the pseudonym T.I.P..  He has also served as a ghostwriter and assisting songwriter, for several artists, such as Bow Wow, Sean "Diddy" Combs, Dr. Dre, Bun B and Keyshia Cole.

Mavin Records: Mavin Records (also known as the Supreme Mavin Dynasty) is a revamped Nigerian-based record label founded by recording artist and record producer Don Jazzy on May 8, 2012.  The label's inception came to fruition following the closure of Mo' Hits Records, a record label owned by the aforementioned producer and D'banj.  The label is home to recording artists such as Tiwa Savage, Iyanya, Dr SID, D'Prince, Di'Ja, Reekado Banks, Korede Bello, Johnny Drille, Poe, and the DNA Twins.  The label also houses a roster of producers such as Jazzy himself, Altims and Baby Fresh.  In 2014, DJ Big N became the label's official disc jockey.  Wande Coal was formerly signed to the label.  On May 8, 2012, the label released a compilation album titled "Solar Plexus".

Summertime (Beyoncé song): "Summertime" is a song by American singer Beyoncé featuring American rapper P. Diddy.  "Summertime" was written by Beyoncé, Angela Beyincé, P. Diddy, Steven "Steven J." Jordan, Adonis Shropshire, Varick "Smitty" Smith and Mario Winans, while production was handled by Winans and P. Diddy.  The song was later remixed to feature vocals from American rapper Ghostface Killah.  "Summertime" was included on the soundtrack album for the film "The Fighting Temptations" (2003), in which Beyoncé played the lead female role.  The original version of the song was released as a B-side to "Crazy in Love" in the UK and Australia, while it was issued as a 12-inch vinyl single in the United States through Columbia Records.

Sean Combs: Sean John Combs (born November 4, 1969), also known by his stage names Puff Daddy, Puffy, P. Diddy, and Diddy, is an American rapper, singer, songwriter, actor, record producer, and entrepreneur.  He was born in Harlem and was raised in Mount Vernon, New York.  He worked as a talent director at Uptown Records before founding his label Bad Boy Entertainment in 1993.  His debut album "No Way Out" (1997) has been certified seven times platinum and was followed by successful albums such as "Forever" (1999), "The Saga Continues..." (2001), and "Press Play" (2006).  In 2009 Combs formed the musical group Diddy – Dirty Money and released the critically well-reviewed and commercially successful album "Last Train to Paris" (2010).

Young &amp; Sexy: "Young & Sexy" is the debut single by American R&B recording trio, Lyric.  The song was produced by Jack Knight and Steve Estiverne and was co-written by background vocalist, Kia Jeffries.  It also featured a guest appearance from former Bad Boy recording artist, Loon.  The song is also noted for its publication under Sean "Diddy" Combs' publishing company, Justin Combs Publishing.  The song peaked at #79 on "Billboard" Hot R&B/Hip-Hop Songs and served as the lead single for Lyric's unreleased self-titled debut album.  It was also featured on the record-breaking, platinum-selling video game soundtrack, "NBA Live 2003" and in the 2002 film, "The Hot Chick".

I Need a Girl (Part Two): "I Need a Girl (Part Two)" is a 2002 single by American rapper P. Diddy with the collaboration of Ginuwine, Loon, Mario Winans and Tammy Ruggeri from the album "We Invented the Remix".  It samples P. Diddy's line "now the Sun don't shine for ever, but as long as it's here then we might as well shine together" from his 1997 song "Victory" featuring The Notorious B.I.G and Busta Rhymes.  It is the second part of the single "I Need a Girl (Part One)".  With the song's success on the charts, P. Diddy achieved the rare occurrence of having both parts of the song become big hits.  "Part Two" peaked at #4 on the U.S. "Billboard" Hot 100 and #2 on the "Billboard" Hot Rap Tracks chart.  It also charted on the UK Singles Chart at #4.  Kay One made another sequel of P. Diddy's song, "I Need A Girl" with collaboration with Mario WInans.

Joell Ortiz: Joell Ortiz (born July 6, 1980) is an American rapper and a member of the group Slaughterhouse.  He was born in Brooklyn, New York.  Ortiz grew up in the Cooper Park Houses in the East Williamsburg section of Brooklyn, New York, formerly signed to Dr. Dre's Aftermath Entertainment record label.  He was featured in the Unsigned Hype column of the March 2004 issue of "The Source" Magazine and was also selected as Chairman's Choice in "XXL" Magazine.

Loon (rapper): Amir Junaid Muhadith (born Chauncey Lamont Hawkins , June 20, 1975 in Harlem, New York) best known by his stage name Loon, was an American rapper formerly signed to P. Diddy's Bad Boy Records.  He is best known for his role in P. Diddy's 2001 hits "I Need a Girl (Part One)" & "I Need a Girl (Part Two)" .

Last Train to Paris: Last Train to Paris is the fifth studio album by American rapper and record producer Diddy and American R&B and hip hop duo Dirty Money.  It was released on December 13, 2010, by Bad Boy Records and Interscope Records.  The album describes Diddy's alter-ego, as he travels from London to Paris, to regain his lost love.  It also introduces the world to Diddy's R&B/Hip-Hop collective, Diddy – Dirty Money, a group consisting of Dawn Richard (formerly from a group Danity Kane) and singer-songwriter Kalenna Harper.  Diddy – Dirty Money performed on the album, alongside several guest vocals, these include Grace Jones, Lil Wayne, Skylar Grey, Drake, Justin Timberlake, T.I., Wiz Khalifa, Swizz Beatz, Trey Songz, Rick Ross, Usher, Sevyn Streeter, James Fauntleroy and Bilal, among others.

Young Chris: Young Chris (born Christopher Francis Ries, March 9, 1983) is an American rapper and songwriter.  A member of Philadelphia rap duo Young Gunz, formerly signed to Roc-A-Fella Records through Beanie Sigel’s State Property collective, early success included the hit single "Can't Stop, Won't Stop".  Signed in December 2010 as a solo artist to Universal Motown through producer/songwriter Rico Love’s label imprint Division1, Young Chris is currently working on his album release.  Because of their homophonic names Ries is often confused with the rapper YC who used to perform as "Yung Chris" and incorrectly credited as the performer of the song "Racks".

Supporting paragraphs: Young &amp; Sexy Loon (rapper)
Answer: Bad Boy Records