It was recorded on 22 May 1974 at Gaumont State Theatre in Kilburn, London by the BBC for radio broadcast, but was unreleased on vinyl until 1982.

At one point during the album, keyboardist Jon Lord jokingly refers to himself as "Rick Emerson" while introducing the band.

[4] All songs written by Ritchie Blackmore, David Coverdale, Glenn Hughes*, Jon Lord and Ian Paice, except where indicated.

The reissued CD edition was released by Purple Records on 30 December 2003 in Japan.

This 2 CD reissue included the whole show, with the addition of previously unreleased 30-minute "Space Truckin'" The remastered CD edition with the whole show was released by EMI on 3 September 2007 in Europe and some other markets.