 Their performance on 9 December 1970 at the Lyceum Theatre in London was filmed and released in UK theatres in 1972 with added psychedelic effects including characters from Marvel Comics.During a break in their first tour in January 1971, Emerson, Lake & Palmer returned to Advision Studios with Offord to record their second album, "Tarkus".Friction between Emerson and Lake during the early recording sessions almost caused the group to disband as Lake disliked the material that Emerson was writing.