Clarinet Quartet,Woodwind Ensemble Clarinet - Level 3 - Digital Download SKU: A0.559932 By Pentatonix. By Matthew Radosevich, Mitchell Grassi, Ruth Anne Cunningham, and Scott Hoying. Arranged by Lisa Ochoco. Contemporary. 26 pages. Lisa L Ochoco #5868531. Published by Lisa L Ochoco (A0.559932). Pentatonix is one of my favorite vocal groups. It is amazing how much sound they can create with just 5 voices.