The first releases from Filthy Friends, the scorchingly melodic rock group whose membership consists of some of the most original musical voices of the past three decades, came as a small, delightful shock to the system. Not only because of the names associated with the project, including Sleater-Kinney co-founder Corin Tucker, R.E.M. guitarist Peter Buck and indie stalwarts Scott McCaughey and Kurt Bloch, but also because of how ably they were able to mesh their individual sounds into a crackling melodic whole on debut album Invitation.

Now, with their follow-upEmerald Valley, out on Kill Rock Stars on May 3rdthe Friends have proven their collective mettle, crafting a thematic suite of songs that finds the quintet digging deeper into their bag of musical tricks and giving Tucker room to rage about and mourn the fate of our planet and the people who inhabit it.