As every budding rock star knows, today's must-have fashion accessory is the gas mask. At least according to Birmingham-based instrumental quintet Sand, that is. Mixing elements of jazz, funk and trip hop with blasts of feedback and spring-like bass, their second album is a varied but ultimately focused affair. 'Airlock' and 'Body In The River' contain throbbing waves of bass-driven tension, carefully orchestrated to create rhythm and tension. Whether on the chugging guitar of 'Bug Crusher' or the insistent percussive swing of 'Whalebone Smack', each track is as tight as the gas masks they wear so beautifully.