Acapella Extractor - Isolate vocals from any song for free
tonestro - Practice & improve on your wind instrument while having fun
Melody ML - Easily separate audio tracks using machine learning
Flat - Online collaborative music score and tab editor, accessible from any device
Stop Breathe & Think - Guided meditation for more mindfulness and compassion.
Transposr - A free and simple way to transpose your sheet music or MP3.