The Brothers Johnson were protégés of Quincy Jones, and his El Lay approach to funk rubbed off on them. They created a series of great singles that ranged from psychedelic to stanky, but they never approached the ferocity of Sly Stone or the weirdness of P-Funk. Which is to say, they may have been funky, but they were also slick. Those singles are all on A&M's Greatest Hits; things get a little thin beyond "Strawberry Letter 23," "I'll Be Good To You," "Stomp!" and "Get The Funk Out Ma Face," but never so much that fans of the genre won't dig it. Regardless, those singles are essential 70's soul.