The early word on James Mangold’s Bob Dylan biopic “ A Complete Unknown ” has rightly centered around a tremendous Timothée Chalamet performance, and an exciting discovery in Monica Barbaro as Joan Baez.

Watch an exclusive 'A Complete Unknown' clip featuring Timothée Chalamet as Bob Dylan and Boyd Holbrook as a drunken Johnny Cash.

The actor’s vocals so impressed the film’s director that he used the live recordings, instead of those prerecorded in a studio. Here’s a look at other actors who have hit their own high notes in musical biopics.

As the musical icon, Timothée Chalamet delivers a remarkable, if deliberately inscrutable, performance. Timothée Chalamet Inhabits Bob Dylan’s Mysteries in A Complete Unknown: Review

"A Complete Unknown," starring Timothée Chalamet tells the story of how Bob Dylan went from a 19-year-old with $5 in his pocket to becoming one of the biggest musical stars of the day, all in less than three years.