Choral Choir (TTBB) - Level 3 - Digital Download SKU: A0.973077 By Jason Mraz. By Jason Mraz. Arranged by Arranged by James Morgan. Pop,Rock. Octavo. 16 pages. James Morgan #4776637. Published by James Morgan (A0.973077). This is a fun chart that was originally written for a barbershop quartet with ukulele accompaniment. If you don't happen to have a ukulele handy, this can also be performed with any other chorded instrument, such as a piano, or guitar.