Review on Portable Keyboard Educational Instruments by PicassoTiles: Enhancing Learning, Fun, and Portability! by Jason Bollinger

Much of this was annoying. The white keys only play demo songs. They don't play any sounds when you press them. Only do black keys. As a musician, I thought that was a terrible idea. And then with each new key press, the volume increases again (which automatically becomes very loud). I had to go back.