2 p.m., Sunday, July 19
Singer Merrill Garbus performs tUnE-yArDs, her musical project with Nate Brenner on the electric bass. Experimental in nature, it utilizes looping techniques and unusual percussion.
The quartet DakhaBrakha also performs that day. Originally from Kiev, Ukraine, the world music group powerful vocals are accompanied by Arabic, African, Australian, Indian and Russian instrumentation.
2 p.m., Sunday, July 26
Under the artistic direction of Helgi Tomasson, the San Francisco Ballet performs works from its current repertory. These include “Rush,” by composer Bohuslav Martinu with choreography by Christopher Wheeldon and “Lambarena” by composer Johan Sebastian Bach, traditional African music arranged by Pierre Akendengue and Hughes de Courson and choreography by Val Caniparoli. www.sfballet.org.
All concerts begin at 2 p.m. Sigmund Stern Grove, 19th Avenue and Sloat Boulevard, S.F. (415) 252-6252, www.sterngrove.org.