The Black Eyed Peas' fourth outing, MONKEY BUSINESS, picks up right where their platinum-selling breakout album, ELEPHUNK, left off, with the feel of a non-stop party run by an ultra-savvy DJ. "Pump It" opens the disc on a straight sample of Dick Dale's surf classic "Misirlou," as the three MCs of BEP float in and out--sometimes rapid-fire, sometimes measured--with Fergie stepping in on cue to alternately sing softly or with deep, soulful emotion. <p>The Peas' origins are tied to the DJ-driven world of breakdancing, and that flavor saturates MONKEY BUSINESS, as beats drop in and out, tracks blend into other tracks, and a lighthearted spirit of sophisticated ecstasy prevails. The aforementioned "Pump It" slides flawlessly into the lively single "Don't Phunk with My Heart," and the stage for the album is set. Icons James Brown and Sting drop by, on the uncompromisingly funky "They Don't Want Music" and the reggae-soaked "Union," respectively, but they're just guests on board for the ride (along with Justin Timberlake, John Legend, and others), part of the musical mural. The Black Eyed Peas turned from underground favorites to hit-making performers on ELEPHUNK; this follow-up continues that upward progression.