After I posted my May preview I found out about a couple more concerts of interest:
Paul Flight leads Chora Nova and soprano Ann Moss, tenor Mark Alexander Bonney, and baritone Ben Kazez in Handel's evergreen pastoral Acis & Galatea, along with Purcell's Beati Omnes Qui Timent Dominum and Jehova Quam Multi Sunt Hostes Mei. That's 23 May at First Congregational Church in Berkeley. You may find more information here.
Wild Rumpus New Music Collective performs a program mostly of world premieres (along with one San Francisco premiere and some pieces that are not premieres but still new) on 29 May at the San Francisco Conservatory of Music. The world premieres are Endless Deeps by Emma O'Halloran, Bloom by Stefan Weisman, and Androgué by Jen Wang. (The Weisman piece is inspired by Molly Bloom's ending soliloquy from Ulysses, and Wang's piece is inspired by fragments by Borges.) The San Francisco premiere is I Will Learn to Love a Person by Christopher Cerrone, using poetry by Tao Lin. The program also includes an arrangement of Beyoncé's Blue by Dan Van Hassel and Steve Mackey's Fusion Time. Tickets are available at the door or in advance here.
And here's another reminder to check BART's capricious shut-down schedule before you make plans. They've been changing the announced dates, sometimes just days before the scheduled shut-down, so even if you think you know when it's happening it's a good idea to double-check here.