There are some great things on the internet, but this has to be one of my new favourites. The Chrome Music Lab is a collection of cool music experiments built using the Web Audio API (more about that here).
From the Chrome Music Lab website:
Music is for everyone. So this year for Music In Our Schools month, we wanted to make learning music a bit more accessible to everyone by using technology that’s open to everyone: the web. Chrome Music Lab is a collection of experiments that let anyone, at any age, explore how music works.
The experiments are great fun to play around with (the Rhythm and Oscillator are my favourites) and a great educational tool. If you are a learning an instrument, a parent of someone learning an instrument or a teacher — check it out!