After overhearing Duggee listening to a beautiful track by the Squirrel Valley Voices Choir, the Squirrels seek to learn more about the roles that make up a choir – basses, sopranos, altos and tenors. A distressed Eugene then alerts them that half of the choir have been taken sick and can’t perform that day. The Squirrels step up to take their place. Initially, when the newly arranged choir sing, the voices aren’t gelling together. Duggee teaches them the principles they must get right first, for the choir to succeed – breathing, pitch, volume, focus and timing. With a lot of practice, the Squirrels turn up to perform perfectly together and finally earn their Choir Badge.