Touch Bar Nyancat - Nyancat on your MacBook Pro's Touch Bar #innovation
Flowkey - The easiest way to learn piano with your iPhone or iPad
My TouchBar My Rules (MTMR) - Customize your touch bar as you want it
Yousician - Learn to play music at home, at your own pace
Touch Bar Simulator - The macOS Touch Bar Simulator as a standalone app
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.