That is, McCartney and McCartney II.
Cut a decade apart, mostly without any collaborators, these two albums feel like outtake sets, in the best possible way: music that chases any crazy idea down a dark alley. Released three weeks before Let It Be in 1970, McCartney announced Paul's love for his wife and the breakup of the Beatles. What makes it so touching is how much it tries to re-create the Fabs. McCartney played every instrument: Ringo-101 drums ("Every Night"), Harrison-ish slide ("Man We Was Lonely"), Lennon blues-rock guitar ("Oo-You"). The masterwork is "Maybe I'm Amazed"; other songs make you wonder what they might've become with his mates around.