let Starr sing more; he replied: "[I am] quite happy with my one little track on each album". Studio years In August 1966, the Beatles released Revolver, their seventh UK LP. It included the song "Yellow Submarine", their only British number-one single with Starr as the lead singer. Later that month, owing to the increasing pressures of touring, the Beatles gave their final concert, a 30-minute performance at San Francisco Candlestick Park. Starr commented: "We gave up touring at the right time. Four years of Beatlemania were enough for anyone." By December he had moved to a larger estate called Sunny Heights, in size, at St George's Hill in Weybridge, Surrey, near to Lennon. Although he had equipped the house with many luxury items, including numerous televisions, light machines, film projectors, stereo equipment, a billiard table, go-kart track and a bar named the Flying Cow, he did not include a drum kit; he explained: "When we don't record, I don't play." For the Beatles' seminal 1967 album, Sgt. Pepper's Lonely Hearts Club Band, Starr sang lead vocals on the Lennon–McCartney composition "With a Little Help from My Friends". Although the Beatles had enjoyed widespread commercial and critical success with Sgt. Pepper, the long hours they spent recording the LP contributed to Starr's increased feeling of alienation within the band; he commented: "[It] wasn't our best album. That was the peak for everyone else, but for me it was a bit like being a session musician ... They more or less direct me in the style I can play." His inability to compose new material led to his input being minimised during recording sessions; he often found himself relegated to adding minor percussion effects to songs by McCartney, Lennon and Harrison. During his downtime, Starr worked on his guitar playing, and said: "I jump into chords that no one seems to get into. Most of the stuff I write is twelve-bar". Epstein's death in August 1967 left the Beatles without management; Starr remarked: "[It was] a strange time for us, when it's someone who we've relied on in the business, where we never got involved." Soon afterwards, the band began an ill-fated film project, Magical Mystery Tour. Starr's growing interest in photography led to his billing as the movie's Director of Photography, and his participation in the film's editing was matched only by that of McCartney. In February 1968, Starr became