Have you thought about an easier way for your chorus members to learn their parts? ChorusClass is an app that makes it possible for chorus members to practice at home, school, work or anywhere, with a single tap on your phone.
Record voice or instrument parts and invite members to your chorus. Now your members can practice in between rehearsals. This gives the chorus rehearsals more time for singing together.

Record multipart harmonies with a single tap on your smartphone or tablet and rehearse by muting/unmuting the different parts while you sing along. Upgrade to a "PRO" account to share your recordings with chorus members or collaborate by having different singers record different parts of the same song. Perfect for chorus voice leaders.