Fun fact: American Southern accents are pretty easy for English actors to mimic. Because it's entirely possible that pre-American English accents were closer to modern Southern accents than to modern English accents.
Stills and behind the scenes images from I Saw the Light. (Via precurorpress.tumblr & Torrilla). Full size image: http://maryxglz.tumblr.com/post/161690113922/i-saw-the-light-2015-via-precursorpresstumblr