Primus has never tried to shake things up as much as they do on their seventh album, ‘AntiPop’. Primus enlisted a dizzying array of collaborators -- Stewart Copeland, Tom Waits, James Hetfield, Tom Morello, Jim Martin, Matt Stone, Martina, and Fred Durst among them -- all in the purpose of challenging themselves to find different dimensions to its music. Some play or sing, some produce, but it's amazing how much each individual guest changes the tone of the music. It's possible to get past the doggy lyrics and hear ‘AntiPop’ as one of Primus' most ambitious and best efforts. No two songs sound the same, and some collaborations are among the best things Primus has ever recorded.