Inspired by "The Grey Album", which collaborative EP by Jay-Z and Linkin Park was released in 2004?
Collision Course (album) Collision Course is a collaborative EP from American rapper Jay-Z and nu metal band Linkin Park, released on November 30, 2004 by Roc-A-Fella, Machine Shop, Warner Bros. and Def Jam records. Before the album, Jay-Z had released collaborations with The Roots and R. Kelly, and Linkin Park had collaborated with various artists on their remix album Reanimation. The album was inspired by "The Grey Album" by Danger Mouse, which was a mash-up album between Jay-Z and The Beatles. MTV had originally planned on mashing up only one or two songs, but the project was eventually expanded to a six-song EP. The album was mostly produced by Mike Shinoda and Jay-Z, and was recorded between July 16 and July 19.
Sweat (Nelly album) Sweat is the third studio album by American rapper Nelly. It was intended to be released on August 17, 2004, before being delayed and released on September 13, 2004, by Universal Records. Production was handled by several producers, including Jason "Jay E" Epperson, Midi Mafia, The Neptunes, Trife, Jazze Pha, Doe and The Alchemist. Released in conjunction with "Suit", Nelly was intended to release a single album before conceptualizing and releasing two albums simultaneously, both which would contrast each other's themes. Nelly characterized "Sweat" as "more up-tempo" and "energetic" while describing "Suit" as more of "a grown-up and sexy vibe [...] it's more melodic".