Synthesia - A fun way to learn how to play the piano.
Spotify - Map shows when two people play same song at same time
Playground Sessions - Online piano learning game.
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm