Mr Hargreaves is a Pentecostal minister and the party's prospective parliamentary candidate for Walthamstow. Once a member of the pop band Snap, he too has enjoyed chart success: Snap's "Cheat, Cheat" reached the Top 200 in the late 1970s.
More recently he has written such hit songs as "Problematic" for Five Star, as well as "So Macho" and the theme tune for BBC TV's Pebble Mill At One.
"One of the things one wants to do is try and get to the 6 million voters who have never voted in an election before - the 18- to 23-year-olds. One way of doing that is to have something that attracts their attention, such as a song," said Orde Wingate, the party's Greater London campaign manager.
"It's not a dirge by any means," he added. "It has a catchy tune and the words, which are in line with the Referendum Party's ideals, are very good. Even I can actually sing the tune. It should appeal to many people, because you can sing along." Clare GarnerReuse content