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.
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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.