There’s a lot we’re learning about Clive Davis in his new memoir, “The Soundtrack of My Life,” and not just about his sex life. Yes, the 80-year-old music mogul reveals that he’s bisexual — sex with a man “provided welcome relief” after two marriages, he writes — but we’re also surprised to learn that Davis is a Harvard man. Who knew that the guy who signed or discovered Whitney Houston, Patti Smith, Bruce Springsteen, Simon & Garfunkel, and the Grateful Dead graduated from Harvard Law School in 1956? And he almost dropped out. In an interview with the Harvard Bulletin a decade ago, Davis confessed that he felt like a fish out of water at the World’s Greatest University. “I had so many adjustments at the time, it was hard to single one out,” said Davis, who was a Jewish kid from a working-class family in Brooklyn. “This change was magnified by the campus of Harvard and the different nature of the student body.” But he hung around and the rest is history.