tonestro - Practice & improve on your wind instrument while having fun
Flowkey - The easiest way to learn piano with your iPhone or iPad
Violin by Trala - Violin by Trala is a music learning app that is designed specifically for Violin users.
Yousician - Learn to play music at home, at your own pace
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.
Piano by Yousician - Piano by Yousician is a music app that serves as a 24/7 digital Piano Guide at an affordable price.