Question: Which Paul McCartney reached the #9 chart position in the UK and was released in 1980?
Related documents: [0]  [DOC] McCartney II is the second completely solo studio album by Paul McCartney, and the first since the formation of Wings in 1971. It was released in 1980, a year before the band's dissolution and while their future lay in limbo. The album is a significant departure for McCartney, as much of it relies heavily on synthesizers and studio experimentation. It was reissued on 13 June 2011 as part of the "Paul McCartney Archive Collection". The album remains a cult favourite. [END] 
[1]  [DOC] "Waterfalls" is a Paul McCartney ballad from his first solo album after Wings, "McCartney II". The song has a stripped-down sound, with McCartney only playing a Fender Rhodes electric piano and a synthesizer and singing, and a short solo most likely played on an acoustic guitar. It was released as a single with "Check My Machine" as its B-Side and reached chart position #9 in the UK. In the US, however, it was his first single ever to miss the "Billboard" Hot 100 chart, only reaching number 106 despite being the follow-up to the number one hit "Coming Up". In 2013, "Rolling Stone" rated it the #25 all-time Paul McCartney post-Beatles song, describing how it contrasted with Wings' prior single. [END] 
Answer: 
McCartney II
McCartney II