FM's first album since "Like a G6" feels less like an album than a clutch of singles shooting for those stars again. To put it another way, Dirty Bass is a non-stop party. The guest list includes big names (Bieber, Pitbull) and unknowns, all served with a smorgasbord of the day's biggest dance beats. With the exception of the slizzery, Tyga-featuring title track, most cuts here feel more hands-in-the-air than bass-down-low. And while some tracks ("Turn Up the Love") feel like a mashup of modern radio hits, unexpected gems (like the Feist-sampling "Little Bird") highlight FM's potential.