In Concert with The London Symphony Orchestra is a live album and DVD by the English hard rock band Deep Purple, recorded on 25–26 September 1999 at the Royal Albert Hall in London with the London Symphony Orchestra, and released on 8 February 2000 on Eagle Records.

Concerto for Group and Orchestra is a live album by Deep Purple and the Royal Philharmonic Orchestra conducted by Malcolm Arnold, recorded at the Royal Albert Hall, London, in September 1969. It consists of a concerto composed by Jon Lord, with lyrics written by Ian Gillan. This is the first full length album to feature Ian Gillan on vocals and Roger Glover on bass. It was released on vinyl in December 1969. The original performance included three additional Deep Purple songs, "Hush", "Wring That Neck", and "Child in Time"; these were included on a 2002 release. This was the last Deep Purple album distributed in the US by Tetragrammaton Records, which went defunct shortly after.