When you've spent a quarter century reinventing rock music, altering the landscape not only for yourself, but for pretty much every band to come after, releasing a new album can be a tricky affair. It's not just a matter of increased expectations -- of course everyone expects their musical gods to put out good albums. The much more troubling prospect is the question, where do we go from here? Sonic Youth started out making music that many people couldn't even recognize as such. Now,