The choral sample in this track was recorded from an installation by Janet Cardiff, then in a gallery in Amsterdam. 'Forty Part Motet' features 40 speakers playing different parts of Thomas Tallis' 16th Century 'Spem in alium.' More information here: en.wikipedia.org/wiki/Janet_Cardiff
It is not my intention to infringe copyright with this track and I hope my recontextualisation is taken as it's intended - as a respectful reworking and a homage to the inspirational original work. If you own the copyright and take issue, please let me know and I'll remove it.