Britten: Noye's Fludde, Op. 59

I'm listening to the soundtrack from Wes Anderson's Moonrise Kingdom.  It includes some selections from Britten's Noye's Fludde, Op. 59.  I hadn't noticed before that "The Spacious Firmament on High" uses the tune "Tallis' Canon," and that some of it is actually sung as a canon.