I’ve seen ads for Casio, Yamaha, etc. Do the keys light up for instruction while a demo song is playing. I’m not sure if they will really teach you sufficiently. I play guitar but I learned it by ear. I know the piano is quite more difficult.
The key will light up and wait for you to play and then the next note will be lit up.
Read here for more information –
http://www.know-your-keyboard-piano.com/casio-lk.html