Acapella Extractor - Isolate vocals from any song for free
Flowkey - The easiest way to learn piano with your iPhone or iPad
Melody ML - Easily separate audio tracks using machine learning
Yousician - Learn to play music at home, at your own pace
Stop Breathe & Think - Guided meditation for more mindfulness and compassion.
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.