Syl Johnson (real name, Sylvester Thompson), who played with Junior Wells and Howlin' Wolf, among others, alleges in the copyright infringement suit that Jacko's "Blood on the Dance Floor," Smith's "Who Stole the D.J.," and Tupac's "Peep Game" all borrowed from his 1967 hit "Different Strokes," -- not the TV theme song you're probably thinking about. Syl's claiming that he hasn't seen one red cent from any of them. What you talkin' about Willis?!
Johnson is seeking unspecified damages. Smith's rep tells TMZ they don't comment on pending litigation, while reps for Jacko, and Tupac's estate, didn't return messages seeking comment.