In “A Complete Unknown,” Timothée Chalamet does his own singing and playing on guitar and harmonica — after five years of studying to master the music of Bob Dylan.

Timothée Chalamet’s lauded transformation into rock icon Bob Dylan in “A Complete Unknown” was so complete, it went all the way down to his cuticles. The “Dune 2” actor, 28, ended rampant speculation about whether the surprisingly long fingernails he has in the new biopic (out Dec. 25) are actually his own during an interview with Fandango.

"A Complete Unknown" tells the story of a particular time in history for acclaimed singer-songwriter Bob Dylan.

Chalamet has been building his Bob Dylan for so long that he’s been seen playing Dylan songs while in costume as Willy Wonka and on the set of “Dune.” His “Dune” co-star, Oscar Isaac (who famously played a fictional Dylan-adjacent folk musician in “Inside Llewyn Davis”), said, ”My first thought, it sounded like a really bad idea.”

He respects the reclusive legacy of Bob Dylan while also delivering on one heck of a show that will perhaps inspire a newfound interest in the folk genre and how Dylan came in “like a rolling stone” to shake the whole scene up by going electric.

In “A Complete Unknown,” detailing young Bob Dylan’s rise, Timothee Chalamet is very good. But he’s not the cast’s standout.

Dylan, a Nobel Prize winning poet, songwriter and performer, also ranks among the most enigmatic. Mangold chronicles Dylan’s Greenwich Village roots, performing in basement coffee houses, recording, forming a romantic and professional partnership with folk singer activist Joan Baez.

Despite the film being utterly conventional, Timothée Chalamet, whose range and confidence keep growing broader, is sensational as Bob Dylan, writes the reviewer.

The "A Complete Unknown" actor also tells Stephen Colbert he was "floored" to receive recognition from the iconic singer-songwriter

The actor spent years preparing to play the legendary singer, learning the harmonica and guitar in the process.

Mickey Rourke seemingly criticized a portrayal of Bob Dylan just days before Timothée Chalamet takes on the rock legend. "Bob Dylan was one of the most interesting people i've ever met," Rourke, 72, wrote via Instagram on Monday,