With this masterful 8-minute work Coll – a trombonist himself – has created a major addition to the instrument’s repertoire. The Chanson is almost Bergian with its dark harmonies and slow-burning passion, unfolding as a song without words whose broad lines exploit the whole compass of the instrument, from pale heights to baleful, gritty depths. The angular Bagatelle which follows could not be more contrasted, drawing much of its characteristic mood and colour from the ingenious use of the harmon mute.