Gareth Churchill trained in London with Rhian Samuel and in Cardiff with Anthony Powers (PhD Composition 2007); other teachers having included Peter Maxwell Davies, Judith Weir, John Metcalf and Charles Camilleri. Commissions include works for Vale of Glamorgan Festival for Arvo Pärt's 75th birthday, Aberystwyh Musicfest, Bangor New Music Festival, Mavron Quartet and South Wales Gay Men's Chorus. Performances have reached audiences in Belgium, Estonia, Italy, Japan, Norway, Spain, the USA and throughout the UK. His output reflects an interest in musical cryptography with many works' titles providing the key to understanding their musical means. He has taught at Cardiff University School of Music, at Aberystwyth Musicfest and is composition teacher for Cardiff University Centre for Continuing and Professional Education.This composition was written for bass clarinet soloist Sarah Watts, who did extensive research on bass clarinet multiphonics. This piece is a great illustration on the integration of multiphonics in contemporary music.