Britten also added – relatively late in the process of scoring the work – an ensemble of handbell ringers. According to Imogen Holst, a member of the Aldeburgh Youth Club brought Britten's attention to a local group of bellringers; hearing them play, Britten was so enchanted by the sound that he gave the ensemble a major part to play as the rainbow unfolds towards the end of the opera. Several commentators, including Michael Kennedy, Christopher Palmer and Humphrey Carpenter, have noted the affinity between the sound of Britten's use of the handbells and the gamelan ensembles he had heard first-hand in Bali in 1956. The scarcity of handbells tuned at several of the pitches required by Britten in the opera was to become an issue when the score was being prepared for publication.