(Barboza) Naming your band Diarrhea Planet says a few things about how much ambition you're going to put behind the thing, but it also belies the talented and earnest nature of this Nashville six-piece guitar-rock outfit's sound. Not, as one might imagine, glib and unpracticed punk rock, Diarrhea Planet employ no fewer than four guitars to bring this midtempo and serviceable brouhaha into reality (obviously, one of those guitars is backstage pounding a tall boy at any given time). But there is squandered greatness here. Diarrhea Planet's latest, I'm Rich Beyond Your Wildest Dreams, screams undelivered potential; it also screams "fucking great live show." In case you need things spelled out for you, this is an endorsement. With the So So Glos.