As a teenager in the mid-'60s, Eisner was drummer with the Strangers, a New York rock band that shared management with the Lovin' Spoonful. While doing the Greenwich Village circuit, they would often open for the Spoonful at the Night Owl, but broke up in the fall of 1965 when Eisner and bassist Larry Hendel decided to finish high school rather than tour with the band. (They later re-formed without Eisner and did a single, subsequently evolving into the Fifth Avenue Band.) Eisner wrote both sides of, and plays guitar on, the obscure 1968 single by Nora Guthrie, Emily's Illness/Home Before Dark. Guthrie, the daughter of Woody Guthrie (and brother of Arlo Guthrie), was Eisner's girlfriend at the time, and only 17 when the single was recorded.
Eisner subsequently got a law degree from Columbia University, though he did get some more of his songs into the repertoire of other artists, including Kenny Rankin, the Turtles, Deniece Williams, and Howdy Moon. Eisner became an entertainment attorney in Los Angeles, working as president of The David Geffen Company in the '80s, and overseeing the production of the films #Risky Business, #After Hours, #Beetlejuice, and #The Last Boy Scout, as well as the stage productions #Cats and #M. Butterfly. He also became CEO of Island World Inc., which produces feature films and television projects. ~ Richie Unterberger, Rovi