Harmony Helper is your digital rehearsal solution to get your entertainers from page to performance. Using advanced patented technology, the Harmony Helper app and our concierge music team gives vocalists a digital rehearsal room in the palm of their hand, so they can practice anytime, anywhere. Your performers come to rehearsal off-book, so you spend your time and resources putting your shows on their feet. Ideal for new shows, replacements, understudies, remounting seasonal content, and more.