SOUND: The Bay Area Sound Ecology presents Phantom Power, a site‐specific concert in which composers will present short works that introduce a subtle layer of sound to the existing environment of Yerba Buena Gardens, evoking how the site sounded years ago, or how it might someday sound, as part of the Soundwave ((4)) Festival.

7 p.m. // Yerba Buena Gardens (780 Howard St) // free, RSVP at [email protected]

EROTIC: At Show You Mine, Show Me Yours, Queer Porn Icon Courtney Trouble hosts a champagne toast to modern pinups and offers one on one advice, technical help, and secrets on how to make the perfect pinup photo, pornographic portrait, or dirty poloroid for your lovers, or yourself. Bring your favorite cameras, outfits, and props. Be sure to purchase your tickets in advance.

6 to 7:30 p.m. // Femina Potens Art Gallery (2199 Market St) // $25