Guests of the San Francisco Ballet Opening Night Gala dance to music being played at the end of the cocktail hour as a signal to guests that it was time to move from cocktails to the sit down dinner in San Francisco, Calif., on Thursday, January 14, 2013. Getting guests to move from one part of the festivities to another is always a challenge so musicians and other performers are sometimes used to motivate patrons move on to the next part of the evening.
This photograph is of a candid moment and was not directed in any way.