20 actors who completely transformed themselves into music legends

The larger-than-life musicians we worship have been brought to the big screen for decades, in biopics that range from transformative to middling.

And finding actors who can accurately portray those artists often requires musical training, studying mannerisms, and physical transformations.

While some roles merely require learning some choreography and slight makeup, others are more intensive, such as Jamie Foxx having his eyes glued shut to portray Ray Charles.

This year, a number of musical biopics are hitting the screen, including one with British actor Tom Hiddleston as Southern musician Hank Williams and Don Cheadle as jazz artist Miles Davis.

Here are 20 of the most notable transformations: