Trying to pin down Toronto-based vocalist k-os' influences proves impossible. The title of his third effort invokes a similar head-scratching inquisition. Fortunately the disco mention is tongue-in-cheek, for this is an album of extreme versatility (in the greatest definition of that word). He jumps off with his familiar hip-hop patois over the huge beats of "Electrik Heat," then offers a panoramic view of bluesy chords, rock guitars, and ragtime poetics. Like the flexible acrobatics of Mos Def and fellow Canadian K'naan, k-os brings lyrical depth through a variety of platforms-and on each, he stands supreme.