In addition to Ellis and Tompsett, the recording of will also feature Sharon D. Clarke (We Will Rock You), Zubin Varla (Jesus Christ Superstar) and cellist Zoe Martlew.
Press notes for the musical, which received a 2004 production at the Edinburgh Fringe Festival, read: "As the mighty alien fleet from the very latest computer game thunders across the computer screen, Johnny prepares to blow them into the usual million pieces. And they send him a message: We surrender. They're not supposed to do that! They're supposed to die. And computer joysticks don't have 'Don't Fire' buttons. But it's only a game, or is it?"
Representatives for the musical state that a 2010 U.K. tour and subsequent West End transfer of Only You Can Save Mankind are in the works. The recording is produced by Neil Brock and features orchestrations by Tom Deering.
Only You Can Save Mankind will be available for download in June by visiting pjsmprints.