Coldplay have not finished with surprises in the run-up to the release of Viva La Vida Or Death And All His Friends, with a "significant major initiative" planned around another single taken from the album on May 21.

With the band recording additional material that did not make the album's final cut, Parlophone is also promising a treat for fans, with a number of other non-album tracks eventually seeing the light of day.

Downloads of the giveaway digital single Violet ...