Ono left the UK to settle in New York City during the fall of 1971. In Greenwich Village, the couple became more politically active and began writing protest songs. These songs became the basis for their next album, Some Time in New York City. As backing, they enlisted the help of New York band Elephant's Memory, consisting of guitarist Wayne 'Tex' Gabriel, bassist Gary Van Scyoc, saxophonist Stan Bronstein, keyboardist Adam Ippolito, keyboardist John La Boosca, and drummer Richard Frank, Jr. Phil Spector co-produced, and Jim Keltner also played on the album. The album was released on 12 June 1972, credited to "John & Yoko/Plastic Ono Band with Elephant's Memory plus Invisible Strings". Some Time in New York City included a second disc, titled Live Jam, consisting of the recordings from the 1969 Peace for Christmas concert and, with bass overdubs by Klaus Voormann, the 1971 performance with Frank Zappa. Ono and Lennon continued to work with Elephant's Memory throughout 1972. On 30 August, as the Plastic Ono Elephant's Memory Band (which also included Jim Keltner), they performed two "One to One" benefit concerts at Madison Square Garden. The event was organised by Geraldo Rivera to raise money for children with mental challenges. By this time, La Boosca had left Elephant's Memory, and the concerts saw the addition of John Ward on bass. The shows were filmed and recorded, and released in February 1986 as the album Live in New York City. They also performed at the Jerry Lewis MDA Labor Day Telethon. The last collaboration between the Plastic Ono Band and Elephant's Memory was Ono's double album Approximately Infinite Universe. It was recorded throughout the fall of 1972, and was released in January 1973. Lennon's split with Ono and the Lost Weekend (1973–1974) By the beginning of 1973, recording had begun on Ono's next album, Feeling the Space, featuring a new group of studio musicians. This incarnation of the Plastic Ono Band featured guitarist David Spinozza, keyboardist Ken Ascher, bassist Gordon Edwards, percussionists Arthur Jenkins and David Friedman, saxophonist Michael Brecker, pedal steel guitarist Sneaky Pete Kleinow, as well as regular contributor Jim Keltner. The album was released in November. Throughout 1973, Lennon and Ono's relationship became strained. By August, the two had begun a period of separation that Lennon called "the Lost Weekend". Lennon recorded Mind Games, using the same players as on Feeling the Space, dubbed "the