Three of Prince's former managers have filed a lawsuit saying the rock star owes them $600,000 and cost them potential commissions by making bad career moves against their advice.

Robert Cavallo, Joseph Ruffalo and Steve Fargnoli claim breach of contract, fraud and bad-faith denial of contract in the lawsuit filed last week in Superior Court.The three, who represented Prince between 1979 and 1988, claim that in 1985 he began ignoring their advice and subsequently released records in competition with each other, followed inconsistent marketing plans and failed to make videos in time to support record sales.

The lawsuit claims the trio lost commissions worth 15 percent of Prince's income. The three, who were fired in 1988, also say Prince failed to uphold a severance agreement.

The lawsuit seeks $600,000 and punitive damages.

Jill Willis, a publicist for the singer, did not immediately return a telephone call Tuesday.

Prince's latest project was the movie and soundtrack album, "Graffiti Bridge."