The ​playpad pro. Music Theory Stave Instrument App

Today's app is the ​playpad pro. Music Theory Stave Instrument app:

​playpad pro. Music Theory Stave Instrument (http://musicaltrixstar.com) Learn and play music; record songs and export; fifteen backing tracks to play along with; transpose into C, F, Bb, Eb, and A; key signatures up to seven sharps and seven flats; five Voices include Piano, Strings, Guitar, Organ, and Electric Guitar; Treble and Bass Clef; play chords and melodies; listen to an iTunes song and play along; learn the relationship between lines and spaces by physically playing the distances as chords or melodies in treble and bass clef; play tunes onto the colorful stave and hear what they should sound like; touch sensitive; (iOS 6.0 or later).