Get practical experience in Music Theory with Pianomatic. Prepare to improvise and compose music. Learn piano keys, minor, major & diminished chords, 12 major scales, 12 minor (including harmonic & melodic). Memorize Circle of Fifths and practice harmonic functions. Exercise on the go, or connect MIDI Keyboard via cable or Bluetooth. If you got stuck, Pianomatic has basic Music Theory references and hints for every exercise.