In the days of mixtapes and CD burning, Paul McCartney was one of those acts like the Fall and Wu-Tang Clan whose immense catalog concealed overlooked corners and underused trails the former Beatle himself had no interest in mentioning. Standalone singles with B-sides, album tracks composed with first wife Linda or Wings members, collaborations with Michael Jackson, Elvis Costello and a member of 10cc —McCartney’s career reveals an untrammeled curiosity about the wonder of human voices sharing a mic; about comic books and sci-fi escapism that his fan base would’ve recognized and appreciated; and, in a break from the promiscuity and grossness of his peers’ backstage practices, about energetic married sex.