Alt-Country/Americana (serious gospel influences on this one): Justin Townes Earle Performs "Harlem River Blues" on Letterman

You want to talk about a legacy? Try being Steve Earle’s kid, named after Townes Van Zandt, and inheriting every bit of talent and disfunction that implies. Always looking to push clear of their shadow, his voice (both as a singer and a writer) was decidedly less country, but still brilliant and deeply rooted in American roots...