A signed copy of “Dirt Road Anthem” sheet music, autographed in-person by Jason Aldean. In-Person Signature. Authentication: JSA (James Spence Authentication) Certification Number: AI33315 Collector Note: Signed sheet music featuring Jason Aldean is highly desirable, especially for one of his signature hits, “Dirt Road Anthem.” Authenticated in-person signed music pieces are particularly sought after by collectors of country music and songwriter memorabilia. A display-ready, standout collectible tied to one of modern country music’s most recognizable songs.