In this Wednesday, May 2, 2012 photo, conductor David Robertson acknowledges the audience during the final dress rehearsal of Benjamin Britten's "Billy Budd" at the Metropolitan Opera in New York. (AP... more 

In this Wednesday, May 2, 2012 photo, conductor David Robertson acknowledges the audience during the final dress rehearsal of Benjamin Britten's "Billy Budd" at the Metropolitan Opera in New York. (AP Photo/Mary Altaffer) less