Mighty Vertebrate hits different. In a world of sound a likes and slow burns, Anna Butterss' latest solo record makes itself known from immediately out of the gate. The album is as eclectic as it is fresh -- unsurprising, given the musician varied career, performing as the bassist for Jason Isbell's group, performing along side Phoebe Bridgers and Jenny Lewis, and serving as one fifth of improvisational group, SML.