Jon Lord, the original keyboardist for Deep Purple, has a new recording of his classical piece, ‘Concerto For Group And Orchestra’ in September, his website announced on Sunday (June 10). The work will be released on the German label Edel and ABC Records in Australia.

Lord has made several revisions to the piece over the years, which has been performed more than 100 times since its premiere in 1969. This new version was recorded at Liverpool’s Philharmonic Hall by a team of engineers from Abbey Road Studios. The hour-long concerto is in three movements and features lyrics by Lord’s Deep Purple bandmate, Ian Gillan.

The concerto was performed by the Royal Liverpool Philharmonic Orchestra, as well as special guest stars Steve Morse, Joe Bonamassa and Iron Maiden‘s Bruce Dickinson. Lord’s “house singers,” Steve Balsam and Kasia Laska, also perform.

The recording was conducted by Paul Mann, whose history with the concerto includes its 30th anniversary performance at the Royal Albert Hall in 1999 and when Deep Purple performed it on their 2000-01 world tour. A documentary film will be included with the CD.