featured a Plastic Ono Band almost identical to the Toronto line-up except White was replaced by Beatles drummer Ringo Starr. The writing credit for "Cold Turkey" contained only Lennon's name, reflecting his split with McCartney and the Beatles. Following the release of the "Cold Turkey" single, Lennon began preparations for a follow-up. On 26 November, he mixed "You Know My Name (Look Up the Number)" and "What's the New Mary Jane", for release as a single. Both songs were old Beatles recordings. "You Know My Name" dated initially from 1967, with further work by Lennon and McCartney in 1969. The B-side was a 1968 Lennon song recorded by him, Harrison and Ono, and originally intended for inclusion on the White Album. The single was put on hold by EMI, and was ultimately cancelled, possibly due to objections from the Beatles. On 15 December, the Plastic Ono Band took part in a benefit concert for UNICEF at the Lyceum Ballroom in London, titled "Peace for Christmas". With 48 hours' notice, Lennon and Ono assembled the Toronto line-up of Clapton, Voormann and White; Clapton brought along Harrison, Billy Preston and the Delaney & Bonnie and Friends touring group, with whom they were touring at the time. In addition to Delaney and Bonnie Bramlett, the group included saxophonist Bobby Keys, drummer Jim Gordon and trumpet player Jim Price. Keith Moon of the Who also joined the performance. Lennon later referred to this line-up as "the Plastic Ono Supergroup". Following the Lyceum show, Lennon and Ono engaged in a media blitz and advertising campaign for peace, taking out billboards in major cities saying "WAR IS OVER! If You Want It – Happy Christmas from John & Yoko". The new year saw the Plastic Ono Band reconvening to record another single. "Instant Karma!" was written and recorded on 27 January 1970, fulfilling Lennon's idea for an instant single. Lennon, Ono, George Harrison, Klaus Voormann, Alan White and Billy Preston, along with backing vocalists recruited from a nearby pub, composed the POB for the session. On Harrison's suggestion, American producer Phil Spector was hired, beginning a working relationship that extended for several years into both his and Lennon's careers. "Instant Karma!", backed with Ono's "Who Has Seen the Wind?", was released just over a week later. The single was credited to "Lennon/Ono with the Plastic Ono Band", in contrast to earlier releases, which were credited to