Trumpet Voluntary is a work of original fiction written for advanced (C1) readers.
This is how Trumpet Voluntary is described on the back cover:
A musician disappears leaving only a strange email message behind her. Her husband, in a desperate search to find her, revisits their shared past and has to face up to some unpleasant realities, before trying to rebuild his life. His journey of discovery takes us across the world to Rio and deep into the human heart.