William Byrd, Mass for Three Voices
A PDF of the music: http://www3.cpdl.org/wiki/images/3/32/BYRD-MA3.pdf
Midi rehearsal parts: http://www.cyberbass.com/Major_Works/Byrd_William/Byrd_Mass3Voices.htm
You Tube video: http://www.youtube.com/playlist?list=PL12A75C35BD29F467&feature=edit_ok
The Proper of the Mass: http://renegoupil.org/
Other music to have prepared:
Opening Procession: Come Holy Ghost, Creator Blessed
After Offertory: Organ Solo
After Communion: Frank, Panis Angelicus (Girl's will sing the solo; Adults to sing choir parts)
Recessional: Come Down, O Love Divine