tonestro - Practice & improve on your wind instrument while having fun
Metronaut - An app to help you play classical music
Piano2Notes - Piano2Notes is a web application and mobile that transcribes your piano tune into a digital word document.
Transposr - A free and simple way to transpose your sheet music or MP3.
Simply Piano - Fast and fun way to learn piano
Flat for Education - The best way to teach music to your students