This piece can be played by 5 flutes with CD backing (fretless bass played by Daf Lewis), with or without the optional Alto Flute. The bass clarinet part is provided here for solely acoustic performances as an alternative to using the backing track. It is suggested that the flute players perform this work sitting in a traditional semicircle with two speakers behind them at head height. The speakers face the audience and the instrumentalists are carried by the backing. The flute players do not need any microphones.