The songs are the highlights here. Bloom is especially good at puncturing emotion with surreal detail, as when she sings the tender “Lullaby for a Newborn,” then reminds us she had been cradling her bottle of water swathed in a towel. More than blunt language — a tool that loses its sharpness with use — this absurdist vein effectively draws laughs, but it also underscores the show’s real subject: the often cruel arbitrariness of life.