Elephunk
will.i.am – vocals on all tracks except 11; backing vocals on track 11; Moog synthesizers on tracks 1, 4, 5, 8, 9, 10, 11 and 13; drum programming on tracks 1, 4, 6, 7, 8, 9 and 10; clavinet on tracks 12 and 13; drums and piano on track 2; Wurlitzer electric piano on track 4; synthesizer on track 10; executive production; production; engineering on tracks 2, 3, 4, 8, 9, 12 and 14; mixing on tracks 10 and 14