This is a Brass Choir version of "Tis a Gift to be Simple" (Appalachian Spring) inspired by Aaron Copeland and more recently made famous by the Musical "Blast"  This arrangement is inspired by the "Blast" version but done for concert band brass and percussion.  This is moderately difficult.  The Instrumentation includes: 4 trumpets, 2 flugelhorns, 3 horns, 3 alto saxes, Euphonium/Tenor Sax, Baritone Sax, 4 trombones, 2 Tubas, and four percussion parts with a piano/organ part as a sub for the mallet percussion.  Very playable and inspiring.  Check out other Versions on this title on this website.