Alan Bullard This is the key, for unison voices, with optional second part, and piano.This is the key is a dramatic, narrative piece, perfect for children's and youth choirs. It can be sung in unison throughout, or the score contains options for two parts, sometimes singing alternating phrases and at other times singing together in two-part harmony. Sections in different tempos and keys create a variety of moods, and the continuous piano part features running quavers, a rhythmic bass line,