It’s both a bio about a pop music icon and a rock and roll concert. Buddy: The Buddy Holly Story runs all October at the History Theatre, Thursdays through Saturdays at 7:30 and Sundays at 2. Phil Nusbaum had a chance to talk to Nicholas Freeman, who plays Buddy Holly, and Gary Rue who serves as the show’s music director. First, Nicholas speaks as a singer of the appeal to him of Buddy Holly’s music.