Legendary music producer Clive Davis has come out as bisexual in a new memoir - The Soundtrack of My Life - detailing long-term, monogamous relationships with men for the past two decades.

The music producer handled artistes such as the late Whitney Houston, Bruce Springsteen and worked with Aretha Franklin.

A Rolling Stone report a first carried the expose followed by an interview on ABC's Nightline Tuesday night.

In a candid five-page section, Davis wrote that he first had a sexual encounter with a man during "the era of Studio 54." 

"On this night, after imbibing enough alcohol, I was open to responding to his sexual overtures," Davis wrote. He said he had only been with women before. Being with a man, he wrote, provided "welcome relief."

After a period of "soul searching and self-analysis," Davis separated from his second wife in 1985, and says that he went on to have simultaneous relationships with two women and a man. In 1990, he entered into a "monogamous relationship" with a male doctor, who is not named in the book. Although that relationship ended in 2004, Davis says he has been in a subsequent relationship with another man ever since.