JAM with Chrome is a web based musical project created by Google. JAM with Chrome lets people from all over the world form a band and jam in real time inside the browser.
You can choose from 3 bass guitars, 6 guitars, standard or brushed drums, Techno , analogue or hip hop drum machines, brass, strings or analogue synths and piano or electric keyboards. Every instrument has an easy or pro mode that gives you more control over how you play them. You'll also find a stereo delay and chorus or filter on most instruments.
In order to make this more fun you can invite friends to your jam by sending them a link or sharing your jam on Google+, twitter or facebook. There is also a live chat function which includes updates on who's playing what.
Heres the promo video that doesn't show much in real terms but is fun anyway.
Check out the Skrillex lama !