What are some alternatives?
BlokDust - Join blocks together to build sounds with this web-based music making app.
Magenta Studio - Make music & art using machine learning
Mubert - Electronic music generated in real-time just for you
Jammer - Turns songs into musical instruments anyone can play
Ramsophone - A generative art/music machine. (Be sure to refresh!)
Keezy Drummer - Make a beat in seconds