Company Musopia created these great apps:
FourChords Guitar Songbook, ChordShaker Guitar Chords Game, Ukulele Karaoke and Tuner, SoniCam - Sonify and transform live video into music, Musicrush, Kala Ukulele Tuner & Lessons, Justin Guitar Lessons & Songs, J.N Guitars Tuner, Pianoke - Play Instant Piano with 1500+ Hit Songs, Guitardom - Swipe and Play, and others..
