Sly Stone is suing a former business manager and others claiming tens of millions of dollars in royalties were kept from the singer.
Stone, whose real name is Sylvester Stewart, was the frontman of the 1970s funk group Sly and The Family Stone.
He sued former manager Gerald Goldstein and several companies in Los Angeles on Thursday, claiming they kept 20 years of royalty payments from Stone and leveraged his work and rights to pay for their lavish lifestyles.
Goldstein has produced numerous other artists. Efforts to reach him for comment were unsuccessful.
The lawsuit claims Goldstein and others set up several companies to divert the royalty payments and borrow against Stone's work.
Some of Stone's hits include "Dance to the Music," "Everyday People" and "Family Affair."