Producer JIM JONSIN is facing a copyright infringement lawsuit over rapper Slim Thug's 2009 single I RUN.
Jonsin, the man behind Lil Wayne's Lollipop smash hit, is accused of failing to gain permission from another music maker, South Florida's Jason Jaggon, to use the beat from his track Just C U for Slim Thug's song.
Jaggon alleges he gave some of his beats to a friend in 2008 who had links to the hip-hop industry interested in buying his work.
But he was never notified of Jonsin's interest and is now suing for compensation.
Bosses at Rebel Rock Entertainment, E-1 Entertainment and Koch Entertainment have also been named in the legal action, which was filed in Fort Lauderdale, Florida.