Originally composed for euphonium and trombone quartet, Funk Theory became an instant success following its premiere in 2003, featuring the all female Bones Apart trombone quartet and David Childs. The music is based on two simple chord sequences; the first is heard in the first 7 bars and the second is an 8 bar sequence heard throughout the piece. The melody continually varies and develops becoming increasingly busy and difficult. It could almost be considered a small set of funk variations. With euphonium parts in both treble and bass clefs, with piano accompaniment and CD backing track.