Glee is an American musical TV show that covers a high school glee club (singing club) complete with all the teen drama of high school. They sing covers of existing songs during their musical acts. They sang Jonathan's cover of Sir Mix a Lot's "Baby Got Back" recently. Except the cover was sampled either 100% for the medley or recreated to a point of being imperceptibly similar. Jonathan was not given any attribution for this. Now Fox is selling recordings of this cover of Jonathan's cover. Does Jonathan have a claim to his cover of an already copyrighted work?