 In early 1973, the band formed their own record label, Manticore Records, and purchased an abandoned cinema as their own rehearsal hall in Fulham, London.In June 1973, Emerson, Lake & Palmer began recording "Brain Salad Surgery" in London at Advision and Olympic Studios which lasted until September that year.Offord was not present for the recording sessions as he was working with Yes, leaving engineering and mixing duties to Chris Kimsey and Geoff Young.