the band, effective immediately. However, the band's break-up would not become public knowledge until McCartney's announcement on 10 April 1970 that he was also leaving. Solo career 1970s Shortly before McCartney announced his exit from the Beatles in April 1970, he and Starr had a falling out due to McCartney's refusal to cede the release date of his eponymous solo album to allow for Starr's debut, Sentimental Journey, and the Beatles' Let It Be. Starr's album – composed of renditions of pre-rock standards that included musical arrangements by Quincy Jones, Maurice Gibb, George Martin and McCartney – peaked at number seven in the UK and number 22 in the US. Starr followed Sentimental Journey with the country-inspired Beaucoups of Blues, engineered by Scotty Moore and featuring renowned Nashville session musician Pete Drake. Despite favourable reviews, the album was a commercial failure. Starr subsequently combined his musical activities with developing a career as a film actor. Starr played drums on Lennon's John Lennon/Plastic Ono Band (1970), Ono's Yoko Ono/Plastic Ono Band (1970), and on Harrison's albums All Things Must Pass (1970), Living in the Material World (1973) and Dark Horse (1974). In 1971, Starr participated in the Concert for Bangladesh, organised by Harrison, and with him co-wrote the hit single "It Don't Come Easy", which reached number four in both the US and the UK. The following year he released his most successful UK hit, "Back Off Boogaloo" (again produced and co-written by Harrison), which peaked at number two (US number nine). Having become friends with the English singer Marc Bolan, Starr made his directorial debut with the 1972 T. Rex documentary Born to Boogie. In 1973 and 1974, Starr had two number one hits in the US: "Photograph", a UK number eight hit co-written with Harrison, and "You're Sixteen", written by the Sherman Brothers. Starr's third million-selling single in the US, "You're Sixteen" was released in the UK in February 1974 where it peaked at number four. Both tracks appeared on Starr's debut rock album, Ringo, produced by Richard Perry and featuring further contributions from Harrison as well as a song each from Lennon and McCartney. A commercial and critical success, the LP also included "Oh My My", a US number five. The album reached number seven in the UK and number two in the US. Author Peter Doggett describes Ringo as a template for Starr's solo career, saying that,