The film Krush Groove is based on the early days of Def Jam Recordings, Russel Simmons’ RUSH artist management company and Run-DMC and the difficulties they face in becoming successful. The movie featured artists well known at that time or on their way to become famous: Run-DMC, Sheila E., Kurtis Blow, The Fat Boys, Beastie Boys and LL Cool J.
Detailed information about the film and its plot can be found at Wikipedia and the Internet Movie Database.
With the film the Krush Groove soundtrack was released.