Silent Studio’s Youth Music Box is a fully interactive musical sandbox where up to four or five people can perform using instruments like keyboards, drums, and a DJ style interface.

We’re running a contest over the next 48 hours to win a limited-edition Rock Band guitar controller customized by PSFK friend Matt W. Moore. All you have to do is re-tweet a link to a post from PSFK (even a link to this contest page) with the hash tag #psfkrb – and we’ll send the guitar anywhere in the world to a randomly drawn winner from everyone who RTs by 4.30pm EST Friday June 12.