He didn't know that when he made Walk the Line." Dylan shared the letters with Mangold, who lifted some of the film's dialogue directly from them. "It's a beautiful series of letters," adds Mangold.

Not long ago, I took a look at the music biopic “A Complete Unknown,” which is a fantastic look at the early career of Bob ...

He didn't know that when he made Walk the Line." Related: Boyd Holbrook is ready to 'make some noise' as Johnny Cash in A Complete Unknown trailer Dylan shared the letters with Mangold ...