You probably know this song. If you don't much like Bob Dylan, Johnny Cash did it; and if you don't like either of them, I've never met you.
Who is the girl?
History preserves her name. She was Suze Rotolo: "an American artist, but... perhaps best known as Bob Dylan's girlfriend between 1961 and 1964 and a strong influence on his music." She died, at 67, of lung cancer.
If you're like anyone, she is the one who grabs your eye when you look at the cover. He looks like nobody; yet she was the influence, and he was the genius. She didn't do anything we readily know of her own. Most Americans could name another two or three of Dylan's songs; those of his generation, ten or more.
There's a lesson here, and it's an important one. I'm not sure quite how to formulate it. It seems improper, and insufficient, to say simply: "The girl matters." But she does, and surely more than we have any way to articulate. She walked with him once, in a lane: and he wrote songs for her.