. "Sean Tillmann"@en . "1978-02-06Z"^^ . "solo_singer" . . "Tillmann, Sean"@en . . . "1978Z"^^ . . "Har Mar Superstar"@en . . . "Har Mar Superstar, Sean Na Na"@en . . . . . . "Sean Matthew Tillmann (born February 6, 1978), better known by his stage names of Har Mar Superstar and Sean Na Na, is an American singer."@en . . . "American singer" . .