As described in David W. Bernstein's recent book, The San Francisco Tape Music Center: 1960s Counterculture and the Avant-Garde, San Francisco nurtured an experimental-music scene around the same time that Haight-Ashbury bands were turning rock music inside out. Since 2000, the San Francisco Electronic Music Festival has extended the pioneering pathways laid down by '60s mavericks such as Morton Subotnick and Terry Riley. This year's festival comes full circle with a performance by the accordion-wielding SF Tape Center alum Pauline Oliveros. Other performers of note include extended-composition guru Phill Niblock, fractured pop chanteuse Tujiko Noriko, and digital-drone programmer Akira Rabelais.