returned their insignia. In July, the Beatles' second film, Help!, was released, again directed by Lester. Described as "mainly a relentless spoof of Bond", it inspired a mixed response among both reviewers and the band. McCartney said: "Help! was great but it wasn't our film – we were sort of guest stars. It was fun, but basically, as an idea for a film, it was a bit wrong." The soundtrack was dominated by Lennon, who wrote and sang lead on most of its songs, including the two singles: "Help!" and "Ticket to Ride". The Help! album, the group's fifth studio LP, mirrored A Hard Day's Night by featuring soundtrack songs on side one and additional songs from the same sessions on side two. The LP contained all original material save for two covers, "Act Naturally" and "Dizzy Miss Lizzy"; they were the last covers the band would include on an album, except for Let It Be brief rendition of the traditional Liverpool folk song "Maggie Mae". The band expanded their use of vocal overdubs on Help! and incorporated classical instruments into some arrangements, including a string quartet on the pop ballad "Yesterday". Composed by and sung by McCartney – none of the other Beatles perform on the recording – "Yesterday" has inspired the most cover versions of any song ever written. With Help!, the Beatles became the first rock group to be nominated for a Grammy Award for Album of the Year. The group's third US tour opened with a performance before a world-record crowd of 55,600 at New York's Shea Stadium on 15 August – "perhaps the most famous of all Beatles' concerts", in Lewisohn's description. A further nine successful concerts followed in other American cities. At a show in Atlanta, the Beatles gave one of the first live performances ever to make use of a foldback system of on-stage monitor speakers. Towards the end of the tour, they met with Elvis Presley, a foundational musical influence on the band, who invited them to his home in Beverly Hills. September 1965 saw the launch of an American Saturday-morning cartoon series, The Beatles, that echoed A Hard Day's Night slapstick antics over its two-year original run. The series was a historical milestone as the first weekly television series to feature animated versions of real, living people. In mid-October, the Beatles entered the recording studio; for the first time when making