Flowkey - The easiest way to learn piano with your iPhone or iPad
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.
Yousician - Learn to play music at home, at your own pace
Guitartapp Chord Pro - Guitartapp Chord Pro is the world’s largest and popular music and audio app that allows you to throw away your songbooks and start jamming with this app.
Jameasy for Violin - Play rhythm game with a real violin. you can play with background music and real-time feedback