Watch Full Movie Online. DEO A reimagining of Deo Gratias (ca. 1497) by Johannes Ockeghem. A Film by Eric Leiser. Animation by Eric Leiser. Composed by Pauline Kim Harris and Spencer Topel Deo is an acoustic-electronic transcription of Johannes Ockeghem’s stunning Deo Gratias devised as a complement to Ambient Chaconne. Notable as a 36-part canon, Ockeghem evokes singing of angels in heaven via an innovation on a traditional canon, using this ancient musical device as a kind of acoustic feedback delay. In essence, our Deo expands this idea of delays to a canon of thousands, in an ever expanding and infinite soundscape, where the melodies eventually dissolve into resonance.