I bought this item to assist in treatment of my lymphedema - to keep my lymph fluid moving. It works absolutely great for that, and it's super-quiet to boot. As for the features, I can't figure out how to use any of them, because there were no instructions included, and the automated voice that comes on when you power up the machine is completely unintellible. Never have used the music player function, nor tried to figure it out. No idea why you would want it. If, like me, you just want a 10-minute full-body shake a couple of times a day, you can't beat this for the price.
Trixie 
