His film scores include those for the BAFTA-winning Touching the Void, and Oscar-winning movies One Day in September, The Last King of Scotland, and Inside Job.
Heffes was nominated for the Golden Globe Award for Best Original Score for his work on Mandela: Long Walk to Freedom.
This led to him becoming assistant to composer Simon Boswell with whom he scored over 20 movies including A Midsummer Night's Dream and Cousin Bette.
[5] He has worked with many notable directors including Stephen Frears (The Program), Mira Nair (Queen of Katwe), Justin Chadwick (The First Grader, Mandela: Long Walk to Freedom), Peter Webber (Emperor) and Catherine Hardwick (Red Riding Hood).
The album was created by improvising on location in a series of one on one collaborations with artists such as Regina Spektor, Ryuichi Sakamoto and Tunde Jegede.