MORTAR & PESTLE Mortar & Pestle mortarandpestlemusic.com One track into the debut from this Oakland trio, you might be surprised to see a drummer credited in the liners. On “U.V.”—as good a first impression as any new group might hope to make—singer Janaysa Lambert and keyboardist Paul Shinichi do soulful synth-pop somewhere between Depeche Mode and Des’ree, that ’90s one-hit wonder behind “You Gotta Be.” They could have gotten...