You all know him and love him. You know his music. You know all the words. Is there a more famous folk-singer nowadays? (Who's this Robert Zimmerman guy, anyways?) Kermit, his banjo, and his tunes are a staple of the American Songbook. Let's get him on the Martin Guitar Main Stage for a set of our favorite sing-along tunes from The Muppets at a momentous occasion for the Philadelphia Folksong Society, the 60th annual festival after having survived the pandemic. "Someday we'll find it, the rainbow connection..."