Near the end of the first movement of Noche Oscura (Dark Night), the track titled “Anima mea turbata est valde,” six pre-recorded and processed voice parts, what I call “virtual voices,” enter together, all of them singing the title words…

Early on in my undergraduate music program, in music history class, I was introduced to Missa Prolationum by Johannes Ockeghem (c. 1410 - 1497). It is a setting of the Mass Ordinary as a series of prolation canons. At…