Def Jam Recordings is an American record label, focused primarily on hip hop and urban music, owned by Universal Music Group, and operates as a part of The Island Def Jam Music Group. In the UK, the label takes on the name Def Jam UK and is operated through Mercury Music Group, while in Japan, it is Def Jam Japan operating through Universal Sigma Music.

Def Jam was created by Rick Rubin in his dorm room in Weinstein Hall at New York University and its first release was a single by his punk-rock group Hose. Russell Simmons joined Rubin shortly after they were introduced to each other by Vincent Gallo. The first single released with a Def Jam Recordings logo was T La Rock & Jazzy Jay's "It's Yours." The first releases with Def Jam Recordings catalog numbers were LL Cool J's "I Need a Beat" and the Beastie Boys' "Rock Hard," both in 1984. The singles sold well, eventually leading to a distribution deal with CBS Records (which would later become Sony Music Entertainment) through Columbia Records the following year. This created a short-lived subsidiary label called OBR Records, catered toward R&B artists — the first artist signed to that imprint was Oran "Juice" Jones, who enjoyed success with his hit single "The Rain". Def Jam also signed its first and only thrash metal band, Slayer, in 1986, and the band's debut album was one of only two Def Jam releases to be distributed through Geffen Records, as opposed to Columbia. As the decade drew to a close, the label signed Public Enemy, whose controversial lyrical content garnered the company both critical acclaim and disdain. Lyor Cohen became president of Def Jam in 1988, after winning a power struggle with Rubin, who would shortly thereafter leave the company to form Def American Recordings (now known as American Recordings). Rubin would take Slayer with him to Def American in its initial stages.

Original Concept were an 80s hip hop group from Long Island, New York, arguably best known for their single, “Can You Feel It.” They only made one album and it was notable for the absence of lyrics on many of the tracks. The group are perhaps better known for their production prowess and instrumentals than anything else.

In the early 1980s, a group of young men at WBAU FM formed a group called the "Concept Crew." Their show “The Operating Room” was broadcast on Monday nights from Adelphi University on the same station which featured the Spectrum City DJs (Chuck D and Flavor Flav) who later went on to form Public Enemy. The members were Doctor Dré, T-Money, Rapper G, Easy G and Wildman Steve. By 1986, the group began calling themselves Original Concept and had released their first record, "Knowledge Me" in February of that year. The B-Side of "Knowledge Me" went on to become their first single, "Can You Feel It." The single has since gone on to become one of the most sampled source records in hip-hop music.

Jazzy Jay, born in Beaufort, South Carolina, United States, November 18, 1961), also known as The Original Jazzy Jay or DJ Jazzy Jay, is an American hip hop DJ and producer. He has collected roughly 400,000 records.

Jazzy Jay was born into a Gullah family in coastal South Carolina. He moved with his family to New York City at a young age and took up the drums, his first instrument. He began his career in hip hop in the 1970s in The Bronx, New York, the epicenter of hip hop culture during the first decade of its development, at the age of 13. An early member of Afrika Bambaataa's Universal Zulu Nation, he was a protege of Bambaataa as well as his older cousin, Kool DJ Red Alert. Beginning as a Zulu King dancer in the early 1970s, Jay later became a Universal Zulu Nation DJ and was a member of the Zulu group Jazzy Five, with which he recorded the single "Jazzy Sensation."

Although Jazzy Jay began performing primarily at street parties, in the 1980s he began DJing in New York clubs such as Negril, the Roxy, the Ritz, and Danceteria. He also hosted a hip hop radio program on KISS FM and in 1984 he played himself as The Roxy's DJ in the influential hip hop film Beat Street.

Christopher "Chris" Tucker (born August 31, 1972) is an American actor and comedian. He is best known for playing the role of Detective James Carter in the Rush Hour film series. Tucker became a frequent stand up performer on Def Comedy Jam in the 1990s. He came to prominence in the 1995 film Friday alongside Ice Cube, and then appeared in Luc Besson's The Fifth Element before beginning work on the highly commercially successful Rush Hour films. In 2006 he negotiated an unprecedented $25 million salary to appear in Rush Hour 3, which at the time made him the highest paid actor in Hollywood. Despite his good box office credentials, his workrate as a film actor has been slow, with Tucker only appearing in the two Rush Hour sequels in the last decade. Tucker was a close friend of Michael Jackson, appearing in the "You Rock My World" video. He appeared as a witness for the defense at Jackson's 2005 trial. He had financial troubles in 2011 when his $6 million property on Lake Apopka in the Bella Collina community was foreclosed. He returned to doing standup that same year.

William Leonard Roberts II (born January 28, 1976), better known by his stage name Rick Ross (often stylized as RICK RO$$), is an American rapper. He derived his stage name from the drug trafficker "Freeway" Ricky Ross, to whom he has no connection. Ross founded the record label Maybach Music Group, on which he released his studio albums Deeper Than Rap and Teflon Don, Ross was also the first artist signed to Diddy's management company Ciroc Entertainment. In early 2012, MTV named Ross as the Hottest MC In The Game.

William Leonard Roberts II was born in Coahoma County, Mississippi. and raised in Carol City, Florida, near Miami. After graduating from Carol City Senior High School, he later attended the historically black college Albany State University on a football scholarship.

After being signed to Suave House Records, former label for rap duo 8Ball & MJG, he eventually signed a deal with Slip-n-Slide Records, which has been under the Def Jam umbrella since 2006. While signed to Slip-n-Slide, Ross toured with fellow rapper Trick Daddy and made guest performances on other Slip-n-Slide albums.