Circa Survive have donated a b–side titled "1,000 Witnesses" to Invisible Children who are currently giving the track to fans who donate $0.99 or more to the charity.

The charity aims to fight the horrible practice of recruiting children into a bloody civil war in Uganda, many of whom are kidnapped from their parents and forced to serve in the rebel armies currently in conflict with the government of the country.

You can make your donation here. You'll need a Google account in order to complete the purchase.