Edward Norton was the first cast member to muster up the courage to reach out to the real Joan Baez for advice, interested in what the real Pete Seeger was like and her friendship with him. He then passed on word to Monica Barbaro that Baez was willing to speak with her.
Timothée Chalamet, Edward Norton, Monica Barbaro and Boyd Holbrook did all their own singing in the movie.
Despite the portrayal of Pete Seeger's frustration at Newport when Dylan goes electric, he wasn't as furious as the film portrays. In fact, he was on his side. He later sent a postcard to Dylan which read:
"Bob! Someone just told me that you too think I didn't like your going electric in 1965. I've denied that so many times. I was furious at the distorted sound - no one could understand the words of 'Maggie's Farm' - and dashed over to the people controlling the PA system. 'No, this is the way they want it,' they said. I shouted, 'If I had an axe, i'd cut the cable' and I guess that's what got quoted. My big mistake was in not challenging from the stage the foolish few who booed. I shoulda said, 'Howlin Wolf goes electric, why can't Bob?' In any case, you keep on. Best, Pete."
"Bob! Someone just told me that you too think I didn't like your going electric in 1965. I've denied that so many times. I was furious at the distorted sound - no one could understand the words of 'Maggie's Farm' - and dashed over to the people controlling the PA system. 'No, this is the way they want it,' they said. I shouted, 'If I had an axe, i'd cut the cable' and I guess that's what got quoted. My big mistake was in not challenging from the stage the foolish few who booed. I shoulda said, 'Howlin Wolf goes electric, why can't Bob?' In any case, you keep on. Best, Pete."
For his role as folk singer Pete Seeger, Edward Norton played Seeger's actual Martin 12-string acoustic guitar with its distinctive triangular soundhole.
The character of Sylvie Russo in the movie is based on Suze Rotolo, Bob Dylan's girlfriend at the time. The New York Times reported that Dylan requested that the director, James Mangold, not use Ms. Rotolo's real name in the film. Mangold stated that "what Bob expressed to me was just that this was not a public person."