MTI RehearScore is a free iOS app developed by Music Theatre International that allows you to learn your music and run rehearsals right from your mobile device. It's a complete digital rendition of the Piano-Conductor Score, sequenced by a top Broadway accompanist, precisely the way the composer intended.

With RehearScore, every musical number, including scene changes, dance music, and underscoring, is recorded in its entirety, so you can rehearse even if you don’t have a pianist. The app allows you to change the tempo and loop a dance break, so you can run multiple rehearsals at once without the need of a separate pianist or recording. You can also adjust your songs into the key that best suits your performer and isolate, increase, or remove any particular vocal line.