The YouTube Symphony Orchestra, directed by Michael Tilson Thomas (L), performs as images of the musicians are projected onto a wall of Carnegie Hall  April 15, 2009 in New York. It is the first orchestra to be selected entirely through auditions on-line. Getty Images logo Getty Images 7 months ago

The YouTube Symphony Orchestra, directed by Michael Tilson Thomas (L), performs as images of the musicians are projected onto a wall of Carnegie Hall April 15, 2009 in New York. It is the first orchestra to be selected entirely through auditions on-line.