Surprisingly, the controversy only escalated with the release of Paul's next album, "Let 'Em In" in late 1976. The title track was a funky soul version of Paul McCartney's No. 3 U.S. hit from earlier that summer. While McCartney's version was heavy on personal references and comparatively light on political figures, Billy Paul's version turned the formula on its head to become a kind of civil rights anthem – albeit one with a personal touch due to the mention of his recently deceased twin sister Pauline Williams. As where McCartney only obliquely refers to "Brother John" (John Lennon or brother-in-law John Eastman or John F. Kennedy) and "Martin Luther" (the martyred civil rights leader or the 16th-century theologian), Billy Paul's version is far more explicit in reciting a list of deceased civil rights leaders (Elijah Muhammad, Malcolm X, Martin Luther King Jr., John F. Kennedy, Robert F. Kennedy, Medgar Evers, and Louis Armstrong). Furthermore, interspersed with Billy Paul's verses are memorable passages of speeches by Malcolm X and King.