 There is a dance or ballet involving two child performers playing the roles of the raven and the dove.For the first time in any of his works involving amateurs, Britten envisaged a large complement of child performers among his orchestral forces, led by what Graham described as "the professional stiffening" of a piano duet, string quintet (two violins, viola, cello and bass), recorder and a timpanist.The young musicians play a variety of instruments, including a full string ensemble with each section led by a member of the professional string quintet.