A Hollywood love letter to Bob Dylan, with all that implies, “A Complete Unknown” works well on its chosen, extremely glossy terms. Its craftsmanship is formidable. Then again, you don’t

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

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.