Voice Duet Voice - Level 2 - Digital Download SKU: A0.596414 Composed by Daniel Hay. Contemporary,Multicultural,Sacred,World. 2 pages. Daniel Hay Music #5723961. Published by Daniel Hay Music (A0.596414). This Sanctus is one of only three parts that survive from the Missa Brevis ad Puerum (Small Mass for a Boy) written by the composer, Daniel Hay, as a memorial for his cousin, Farley McDaniel. Most of the original work was lost during Hurricane Katrina events. The mass was intended for SATB solo voices but could be performed as SATB choral. The other available segment of the mass is the Lux Aeternam for Tenor voice(s). [The attached mp3 sample uses computer generated choral voice.].