Fun
https://pbskids.org/games/music/
https://musicplayonline.com/
https://musiclab.chromeexperiments.com/
Music Theory
https://www.quavermusic.com/info/
https://www.therhythmtrainer.com/
Virtual Instruments
https://scratch.mit.edu/projects/388230026?fbclid=IwAR2l8cwMHrTHNP6SZBh_IzBTNOGtOPjeYFO6zT0MW-glPD5L192haLCZLmA
https://apps.musedlab.org/groovepizza/?museid=tYl_8OtrK&
https://www.incredibox.com/demo/