McCartney II was named in follow-up to his debut album
McCartney (1970) because McCartney plays all instruments on both albums; The album is often
experimental, with most of its songs having been described as strange "eccentric
synthpop". Although McCartney denies any direct influences on the album, McCartney was also inspired by experimental composers
John Cage,
Cornelius Cardew and
Luciano Berio; McCartney explained: "I went to their concerts in London because I had plenty of time on my hands so it was the kind of thing I would go and see. Again, just to see what it was about, not necessarily because I was a massive fan. It was more like: what is a
prepared piano? Oh, that's what it is. You know, funky stuff like that." The instrumental "Frozen Jap" came about as McCartney was experimenting with synths and stumbled upon, in his words, an "Oriental"-sounding melody. The title was meant to be a placeholder as McCartney found earlier song names like "Crystalline Icicles Overhang the Little Cabin By the Ice-Capped Mount Fuji" and "Snow Scene in the Orient" to sound clumsy. On Japanese copies of the album, the title was changed to "Frozen Japanese" because McCartney was unaware that "
jap" was seen as a racial slur. Lead single "
Coming Up" – an uplifting dance number – appeared that April with a video (Paul playing all the bandmates, dubbed 'The Plastic Macs', except for the backing singers played by Linda) and with two B-sides by Wings: "Coming Up (Live at Glasgow)", recorded during Wings' December 1979 show there, and the piano laden instrumental "Lunch Box/Odd Sox" (a
Venus and Mars outtake). An immediate UK No. 2 hit, "Coming Up" was flipped over for the live Wings version in the US where it became another No. 1 for McCartney, greatly raising hopes for his first solo album proper in years. The live Wings version of "Coming Up" was also included as a one-sided 7-inch single in copies of
McCartney II within the US and Canada. "
Temporary Secretary" features frantic synthesiser lines and lyrics about requiring a secretary of any skill level for a short period of time. McCartney dubbed the song an "experiment", saying that he found the concept of a temporary secretary humorous. "Temporary Secretary" was released as a
12" single in Britain, backed with the experimental non-album track "Secret Friend". Author Howard Sounes thought it a "sexy" track. The single was only released in a quantity of 25,000 copies, failing to make an impact on the charts. The single artwork was created by Jeff Cummins of
Hipgnosis. The song was performed live for the first time at the London O2 Arena on 23 May 2015. It was sampled in the
3D RDN remix of "Deep Deep Feeling" on
McCartney III Imagined. ==Release and critical reception==