april 13: saturday

10am: Workshop with Fran Holland

Fran Holland leads a workshop on the construction of homemade musical instruments. Falkirk Cultural Center

1 pm Tectonic Anxiety

San Francisco is poised atop the giant rumblings of the earth. This is rich metaphor to exploit in its similarity to the cultural shocks served to the area in technological upheavals. This panel collects an eclectic selection of researchers who are using sound detection in their work and surveys some of the new "big science" projects. Panelists include members of the Global Oscillation Network Group (GONG), Greg Beroza (USA) of Stanford's Earthquake Research Center, and Micheal J. Buckingham of the Scripps Institute of Oceanography. Moderated by Natalie Jeremijenko. At the Exploratorium.

7:30pm: Jazz Age Vitaphone Shorts

The Vitaphone, the first sound film technology to gain widespread acceptance, offered audiences the closest approximation possible to a live performance. A sampling of late twenties Vitaphone musical shorts, restored from the fragile original sound disks.Pacific Film Archive. Admission: $5.50.

8pm: Chico MacMurtrie

New evening-length work for human and robot performers by a San Francisco pioneer of machine art. Friday also. The LAB Admission: $7-$10 sliding scale. Reservations recommended.

8pm: Trimpin and Beth Custer perform with PHFFT

Trimpin and Bay Area composer and performer Beth Custer will perform improvisations and music specifically composed for performance on and with PHFFFT. New Langton Arts. Admission: $8 general, $6 members, seniors, students. Reservations recommended.