Piracy Funds Terrorism Volume 1, usually referred to simply as Piracy Funds Terrorism, is a mixtape produced by British recording artist M.I.A. and American DJ Diplo featuring vocal tracks intended for M.I.A.'s debut album Arular mashed up with samples of other recordings. The mixtape was produced by the two artists at Diplo's home studio in Philadelphia, Pennsylvania. It was not officially released, but was distributed at M.I.A.'s live shows and via the internet to promote the release of her much-delayed debut album. Despite its unofficial status, the mixtape received general acclaim among critics. Several music publications included the mixtape in their listings of the best albums of 2004.