Clarinet Choir,Woodwind Ensemble Bass Clarinet,E-Flat Clarinet - Level 4 - Digital Download SKU: A0.559661 By Pentatonix. By Avriel Kaplan, Christopher J. Baran, Scott Hoying, and Talay Riley. Arranged by Lisa Ochoco. Contemporary,Pop,Rock. 21 pages. Lisa L Ochoco #3629457. Published by Lisa L Ochoco (A0.559661). Pentatonix is one of my favorite vocal groups. It is amazing how much sound they can create with just 5 voices.