Clive Davis sits with Aretha Franklin at a party to celebrate the premier of the film “Clive Davis: The Soundtrack of Our Lives” in New York on April 19, 2017. (Rebecca Smeyne/The New York Times) By ROB TANNENBAUM Clive Davis had been running Columbia Records for about a year when he attended the Monterey Pop Festival in June 1967. It was a pivotal moment in the counterculture, a watershed for the budding sound of psychedelic rock. Davis was easy to spot. He was the guy in khakis and a tennis…
