Previously unreleased first live album finally surfaces after 40 year wait. Sunday 31st March 1974 is a landmark date in the history of rock music. It is now celebrated in the multi format release of a rare recording made at legendary London venue The Rainbow, of a concert by a then up-and-coming band called Queen. Few who turned up for that iconic performance could have predicted they would go on to become arguably the world's best and most successful rock group, although many more may have suspected it after this stunning show.