Flute Quartet,Woodwind Ensemble Alto Flute - Level 3 - Digital Download SKU: A0.559926 By Pentatonix. By Matthew Radosevich, Mitchell Grassi, Ruth Anne Cunningham, and Scott Hoying. Arranged by Lisa Ochoco. Contemporary. 28 pages. Lisa L Ochoco #5866493. Published by Lisa L Ochoco (A0.559926). Pentatonix is one of my favorite vocal groups. It is amazing how much sound they can create with just 5 voices.