Note-Worthy is a reference app for music students, teachers, composers, editors, arrangers, enthusiasts and the like. The simple, graceful interface contains a single keyboard octave from which users can view information about any note in the chromatic scale by simply touching a key. When pressed, the pitch of the note/key is sounded, and a grand staff displays the note name, major key signature, notation in four octaves, relative minor key, and enharmonic equivalents.