proxy of Gazoo: Macca, "Coming Up (Live at Glasgow)".
Have you ever seen the video for this? Paul dressed up as various pop/rock stars and archetypes, including 1974 "Beatle Paul" and a then-unknown-to-me Ron Mael of Sparks. Song's also Linda's best effort apart from "Silly Love Songs."
PS: 1980 strikes me more and more as a very strange year for music. It's like rock abruptly stopped, turned the car 90 degrees, and started driving again.
1980 was indeed a weird year: Top 40 radio was in an identity crisis; the prevalence of disco (and of all-disco formatted stations, which were stealing a lot of the Top 40s' audience) led Top 40 to take a distinctly AC turn, hence Chris Cross, Air Supply, Kenny Rogers etc. It began a downward slide for the format, which didn't bounce back until '83, by which time MTV had become powerful enough to be an influence. The huge, unexpected success of Z-100 in NY that year was the rebirth of Top 40 (or CHR as it had now been rechristened).