CPM 22 ruffled some feathers in the Brazilian punk underground when they got big enough to rock out on national TV, but these Green Day-loving rebels don't seem too concerned. The band formed in the late '90s, and today their music suggests not just pop-punk but the ska that was especially popular before the turn of the millennium. Rest assured, this is a good thing. This foursome has the kind of hooks that make any genre sound good and the kind of riffs that earn cred even from their detractors.