GEORGE COSTACOS PERFORMS AT METROSTAR CHALLENGE. George Costacos has been selected to perform in the first annual MetroStar Talent Challenge at the Metropolitan Room. He was last featured in concert at "Once Upon a Time: Story Songs" in the Metropolitan Museum of Art Grace Rainey Rogers Auditorium, Lincoln Center's Bruno Walter Auditorium in the Library for the Performing Arts, City Center, the National Arts Club and Sardi's, among others, gathering a host of great reviews. Broadway and cabaret performers compete in 3 rounds of Trials (July 7, 14 and 21), Quarter finals (July 28), and 2 rounds of Finals (August 11 and 18). There will be a different celebrity guest judge every week.