Indexical presents Los Angeles composer Casey Anderson in a performance of “TALK RADIO (an opera),” for performers and handheld radios.

Casey Anderson will also direct performances of “Trio (White on White)” and “She Was a Visitor,” by avant-garde composer Robert Ashley, who created “opera for television” with his 1983 serialized opera Perfect Lives. Finally, Santa Cruz locals David Kant and Andrew C. Smith will round out the night with a psychedelic drone set of slowed-down speech, electronics, saxophone, and electric piano, drawn from “The Park,” from Robert Ashley’s Perfect Lives.

All ages are welcome to attend a performance workshop at 4 pm on Saturday, July 11, and to join the performance later that evening as the “chorus” for “She Was a Visitor.”