Like John Rutter before him, Bob Chilcott worked tirelessly during his Cambridge student days with fine ‘local’ groups. As a member of the King’s Singers and subsequently as a freelance composer, Chilcott has forged a convincing, unashamedly accessible synthesis of musical languages, drawing freely on jazz, folk and classical elements in his choral pieces. The works here, for upper voices and jazz trio, are beautifully sung by The Sirens and superbly handled by Signum’s production team. Making Waves, with its Morse code riff, sonorous harmonies and plaintive soprano solo line, has all the makings of a Classic FM hit.