This Thursday, National Geographic Live! begins its third installment of free concerts from “The Rhythm Road: American Music Abroad” program. Co-developed by Jazz at Lincoln Center and the U.S. Department of State’s Bureau of Educational and Cultural Affairs, the program’s goal is to foster a cultural exchange in regions of the world that may have limited access to American music and culture. This year’s lineup includes six jazz quartets and four “urban music” quartets who…