1 2 ) ▁ ▁DJ ▁Head ▁– ▁drum ▁programming ▁( tra cks ▁ 1 1 , ▁ 1 3 , ▁ 1 4 , ▁ 1 7 – 1 9 ) ▁ ▁Mich elle ▁For bes ▁– ▁engineering ▁assistance ▁( tra cks ▁ 6 , ▁ 8 , ▁ 1 2 ) ▁ ▁Se an ▁Cru se ▁– ▁guitar ▁( tra cks ▁ 2 , ▁ 3 ) ▁ ▁John ▁B igh am ▁– ▁guitar ▁( tra cks ▁ 5 , ▁ 1 0 ) ▁ ▁Jeff ▁Bass ▁– ▁vocals ▁( track ▁ 1 ) ▁ ▁The ▁ 4 5 ▁King ▁– ▁production ▁( track ▁ 3 ) ▁ ▁D ido ▁– ▁vocals ▁( track ▁ 3 ) ▁ ▁Paul ▁" B un yan " ▁Ros enberg ▁– ▁vocals ▁( track ▁ 4 ) ▁ ▁Steve ▁B erman ▁– ▁vocals ▁( track ▁ 6 ) ▁ ▁Thomas ▁R ounds ▁– ▁engineering ▁assistance ▁( track ▁ 7 ) ▁ ▁R B X ▁– ▁vocals ▁( track ▁ 9 ) ▁ ▁St icky ▁F ing az ▁– ▁vocals ▁( track ▁ 9 ) ▁ ▁Cam ara ▁K amb on ▁– ▁key boards ▁( track ▁ 9 ) ▁ ▁D ina ▁R ae ▁– ▁vocals ▁( track ▁ 1 3 ) ▁ ▁B izar re ▁– ▁vocals ▁( track ▁ 1 4 ) ▁ ▁S no op ▁Dog g ▁– ▁vocals ▁( track ▁ 1 5 ) ▁ ▁X z ib it ▁– ▁vocals ▁( track ▁ 1 5 ) ▁ ▁N ate ▁Dog g ▁–