Mike McGear: McGear (1974)
While the 1972 debut was fine (if a little non-distinct, like a sort of middling Nilsson or Badfinger record), the self-titled 1974 follow-up is much more interesting. And that's largely because, while McGear may not have wanted to use his family name, he had no compunction about using his brother's talents -- Paul McCartney produced (and apparently co-wrote) the album, and he and various members of Wings were involved in performing the music. So, yeah, it basically sounds at times like a long lost mid-70s Wings album, though actually better than some of what Paul was writing at the time (i.e. I'd take this over Red Rose Speedway in a second).
Opener "Sea Breezes" is an odd duck, a shambling, slightly prog-ish sea shanty of sorts. And the follow-up tune is even stranger, showing McGear's more comedic/showtune side that had been his primary focus (while performing with the Bonzo Dog Band-like Scaffold). But the album picks up. "Leave It" is very Wings-like, poppy and infectious, Paul's influence obvious. "Have You Got Problems" is lengthy and theatrical, while retaining the pop vibe; "Rainbow Lady" is another mid-tempo Wings-like pop-rocker; "Giving Grease A Ride" is another weird one, more on the 10cc spectrum of showtune-infused rock, but lots of fun.
The album was recently reissued, with greatly improved sound and a ton of singles/outtakes, many of which outshine the original record; it adds the McCartney-esque pop of "Sweet Baby" and "Dance The Do" and the Nilsson-like, playful "Do Nothing All Day" and "A to Z" and "Let's Turn The Radio On." Definitely makes the album a more worthwhile investment.
Here's the video for "Leave It":