A disc jockey, also known as DJ, is a person who selects and plays recorded music for an audience. Originally, "disc" (sometimes spelled "disk", although this is now uncommon) referred to phonograph records, not the later Compact Discs. Today, the term includes all forms of music playback, no matter the medium.

There are several types of disc jockeys. Radio DJs or radio personalities introduce and play music that is broadcast on AM, FM, shortwave, digital, or internet radio stations. Club DJs select and play music in bars, nightclubs, or discothèques, or at parties or raves, or even in stadiums. Hip hop disc jockeys select and play music using multiple turntables, often to back up one or more MCs, and they may also do turntable scratching to create percussive sounds. In reggae, the DJ (deejay) is a vocalist who raps, "toasts", or chats over pre-recorded rhythm tracks while the individual choosing and playing them is referred to as a selector. Mobile DJs travel with portable sound systems and play recorded music at a variety of events.

Robin Charles Thicke ( /ˈθɪk/; born March 10, 1977) is an American R&B singer-songwriter, musician, composer, and actor. Thicke's albums, which he previously released under the name Thicke, are noted for their feature of a predominantly R&B sound. Thicke has written hits for popular artists such as Jennifer Hudson, Usher, Mary J. Blige and Raven-Symoné. Thicke has also been acknowledged for his work in popular albums such as Confessions and Tha Carter III.

Thicke is a judge on the ABC show Duets.

Before his days as a singer-songwriter, Thicke had written "Love Is On My Side" on Brandy's self-titled album and a number of songs for 3T's "Sexual Attention" and collaborated with Jordan Knight, Jimmy Jam and Terry Lewis on several songs in Knight's 1999 album Jordan Knight. He also co-wrote the songs "When You Put Your Hands On Me" for Christina Aguilera's debut album and "No Tears on My Pillow" for Mýa's sophomore release, Fear of Flying. As an artist, he recorded and performed solely under his surname, Thicke. He would continue to do so until 2005.

Jessica Ellen Cornish (born 27 March 1988), better known by her stage name Jessie J, is an English singer and songwriter. Born and raised in London, she studied at the BRIT School before signing with Gut Records and striking a songwriting deal with Sony/ATV Music Publishing where she wrote for artists such as Chris Brown and Miley Cyrus.

Signed with Universal, Jessie J came to prominence following the release of her debut single "Do It Like a Dude" which peaked at number two on the UK Singles Charts. After scoring her first number one in the United Kingdom, France, Ireland and New Zealand with the song "Price Tag", she released her debut album Who You Are (2011) which charted at number two in the UK. Other releases from the album include "Nobody's Perfect", "Who's Laughing Now" and "Who You Are" which charted within the top 20 in the UK but the release of fifth single "Domino" spawned international chart success, peaking at number 6 on the Billboard Hot 100 in the US, and becoming her second UK number one. Aside from her musical career, Jessie J is currently a coach and mentor on television show The Voice UK.

James D'Agostino (born 1975), better known by his stage name DJ Green Lantern, is an Italian-American DJ and hip hop music producer from Rochester, New York. In 2002, D'Agostino was signed by Eminem to become the official DJ for Shady Records after DJ Head stepped down for undisclosed reasons. D'Agostino left the label in 2005 due to a dispute with Shady Records rapper 50 Cent.

DJ Green Lantern came to prominence with his "Invasion" mixtape series, the first set of officially sponsored mixtapes from Eminem's Shady Records. On the series, spanning three mixtapes (later to be spun off into the Armageddon series), the DJ broke several diss records, furthering the issues between Eminem and Benzino/The Source as well as the entire Shady camp and Ja Rule/Murder Inc.

He is also recognized as a producer, featuring on his own mixtapes several "Green Remixes," including, most notably, a remix of the Nas and Tupac Shakur collaboration, "Thugz Mansion." He also produced D-Block's "2 Guns Up", an acclaimed street single, which originated as a freestyle rap on his Hot 97 radio show, "In the Lab" (the most memorable of which has also appeared as a mixtape, "The Best of In the Lab"). "In the Lab" is formatted as a one-hour (with commercials) mix show, in which DJ Green Lantern blends a cappella and instrumental tracks from various artists, as well as breaking new and underground music (such as the Ghostface Killah and El-Producto collaboration "HideYaFace").

DJ Fresh (born as Daniel Stein) is an English Drum & Bass and Dubstep producer and DJ. He was one of the principal members of drum & bass supergroup, Bad Company, alongside Darren White (dBridge), Jason Maldini, and Michael Wojcicki (Vegas). He also owns and runs the pioneering drum & bass label Breakbeat Kaos with Adam F.

Along with the three other members of Bad Company, Fresh founded the record label BC Recordings, as well as the website Dogs On Acid. Bad Company are heralded as one of the finest drum & bass acts ever, having produced numerous genre-defining tracks. Undoubtedly their most renowned track is "The Nine", a track released in 1998 when Fresh was just 21 years old. "The Nine" was later voted the greatest drum & bass track of all time by readers of Knowledge Magazine

Resuming his solo career in 2002, Fresh founded Breakbeat Punk, which merged with Adam F's Kaos Recordings to become Breakbeat Kaos in 2003. In 2004 Dogs on Acid was given its own imprint.

Fresh has worked with artists ranging from Pet Shop Boys, DJ Shadow, Apollo 440 to Andy C and Grooverider, and has also held a working relationship with the drum and bass trio Pendulum, whom he signed to Breakbeat Kaos in 2005.