Hidden Orchestra's third album, Dawn Chorus, is a personal audio diary of producer and composer Joe Acheson's travels and experiences. The album features birdsong and field recordings captured over many years in various locations, intertwined with bass, drums, percussion, and eclectic instruments. Each track is set to a different dawn chorus recording, providing percussive and melodic effects. The album includes sessions with various musicians and incorporates ideas and extracts from tracks written over the last twenty years.