Texan-born Steve Earle is one of those rare crossover artists. Unlike today, when Earle's debut album hit shelves in the late '80s, country artists were known by country fans. Rock and pop fans might only know a country music star from their parents' or grandparents' record collections. But long before music genre lines expanded and blurred, Earle was a trailblazer, his music running the gamut of country, folk, roots, indie and rock. In his website bio, Earle is described as a "protege of Townes Van Zandt and Guy Clark," artists who also defied a cut-and-dry classification. Earle is also an accomplished author and actor, crossing over to a whole new fanbase with his role as musican Harley Watt in the critically acclaimed HBO series Treme (and as himself, singing "The Ballad of Kenneth Parcell" on an episode of 30 Rock). If you don't know Earle's music, see him live. You'll crossover--as a fan--too.