The Chartjackers audience got totally involved in helping YouTube legends Johnny, Jimmy, Charlie and Alex crowd source a hit single for Children In Need.

In the BBC Switch documentary series we followed the lives of four teenage video bloggers as they attempted to write, record and release a pop song, with the goal to sell an estimated 25,000 singles to achieve their dream of a number one single.

We produced the Chartjackers branding and creative over YouTube, Twitter and the official BBC microsite.

The single didn't reach number one, but did manage an impressive 20,000 downloads and made a great contribution to Children In Need.

Check out Chartjackers on YouTube, Twitter and BBC Switch.