In a duel between Ed Sheeran and Noah Kahan, who would win? The musical maestros put the question to the test with a surprise appearance in Nashville this week at popular dive bar and karaoke hotspot Santa's Pub,

Noah Kahan has long joked that he's the "Jewish Ed Sheeran." And this week, the two singer-songwriters finally got together, playing a set of acoustic songs - including one of the British pop star's unreleased tracks titled "Old Phone" - in a Nashville pub.