grab williecarmen, eric, david! come on up! vicki, come on up! c'mon! volunteers, let's go!on up, come on up, volunteers! members of the committee, come on up! members of the committee, anybody else? , opt! volunteers in the audience,, one of -- come on up! vicki, vicki, come on op! c'mon, anybody else? come on up! whoo! standup! come on! get out of your seats, everyone! stand up, stand up, stand up! come on! ♪ >> whoo! thank you all for coming! let's have a great evening. thank you all, everyone. thank you to all of our dancers. have a great evening. thank you for coming.

grab williecarmen, eric, david! come on up! vicki, come on up! c'mon! volunteers, let's go!e on up, come on up, volunteers! members of the committee, come on up! members of the committee, anybody else? , opt! volunteers in the audience,, one of -- come on up! vicki, vicki, come on op! c'mon, anybody else? come on up! whoo! standup! come on! get out of your seats, everyone! stand up, stand up, stand up! come on! ♪ >> whoo! thank you all for coming! let's have a great evening. thank you all, everyone. thank you to all of our dancers. have a great evening. thank you for coming. >> if you hear strange sounds, we will be hearing strange sounds all the time. this is part of our new installation called "what is missing." i am the executive director of the academy. people in san francisco are very fortunate to have a truly remarkable public arts pro gram that makes projects like this one possible. we open this building one year ago. since then, about 2.3 million visitors have come through the california academy of arts and sciences. that is ok. my original goal was to speak alcatraz