All the best male-female pop partnerships teasingly hint at romance, and this collaboration between David Byrne and Annie Clark, aka St Vincent, is no exception. Sometimes it's on the surface, in the seductive push and pull of their voices in Lazarus; sometimes it's subtler, buried in the tantalising intermingling of songwriting limbs. When Ice Age, sung by Clark, begins to sound like a Talking Heads song, or her guitar flickers across Who, you get the peculiar sensation they are wearing each other's clothes. That said, mostly their aesthetics seem to be spliced rather than shared, and hers – exemplified in the tender Optimist – tends to be dominated by his: exuberant, febrile, a riot of rippling percussion (I Am An Ape) and joyful brass (The One Who Broke Your Heart). By the end, the couple they most resemble is Peter Pan and Tinkerbell, for he is eternally youthful in his restless invention, and while she seems soft and wispy, up close she glints like a razor blade.