Sept. 11-12: Shannon and the Clams, S.F. Opera Ball, Luisa Miller, Australian Pink Floyd

San Francisco author-illustrator Anita Ellis celebrates the release of her children’s book “The Magical World of Abra” on Saturday. (Courtesy photo)


Shannon and the Clams: The beloved East Bay rock trio appears at a record release bash for “Gone by the Dawn” produced by Sonny Smith of Sonny and the Sunsets. [9 p.m., Great American Music Hall, 859 O’Farrell St., S.F.]

Luisa Miller: San Francisco Opera opens its 93rd season with Verdi’s tragic opera of troubled love amid political corruption; the performance is preceded at 5 p.m. with “Opera Ball 2015: Music & Moonlight” gala festivities, honoring director David Gockley’s final year with the company. [8 p.m., War Memorial Opera House, 301 Van Ness Ave., S.F.]

Australian Pink Floyd Show: The tribute band has been celebrating the iconic English prog-rock group since 1988. [8 p.m., Warfield, 982 Market St., S.F.]

Alejandro Almanza Pereda: The contemporary artist-in-residence hosts a reception for “everything but the kitchen sank,” in which he created an underwater studio for experimentation and the production of new still life photos and video. [7 to 9 p.m., Walter and McBean Galleries, S.F. Art Institute, 800 Chestnut St., S.F.]

Ray Charles Project; A swinging sextet of outstanding Bay Area musicians offers its take on highlights from the late R&B master’s amazing songbook. [7:30 and 10 p.m., Biscuits & Blues, 401 Mason St., S.F.]

Ali Wong: The raunchy Vietnamese-Chinese-American San Francisco-born comedian, named on Variety’s 2011 list of “10 Comics to Watch,” opens a headlining two-night engagement. [8 and 10:15 p.m., Cobb’s Comedy Club, 915 Columbus Ave., S.F.]

Willis Earl Beal: Noisepop presents the eclectic soul, blues and folk singer whose most recent recording is 2015’s “Noctunes.” [8:30 p.m., Swedish American Hall, 2174 Market St., S.F.]

California Honeydrops: The Oakland-based soulful jazz five piece is playing to promote its upcoming LP, “A River’s Invitation.” [9 p.m., Fillmore, 1805 Geary Blvd., S.F.]


“The Magical World of Abra” party: San Francisco author-illustrator Anita Ellis celebrates the release of her children’s book with an art show and 6:30 p.m. reading followed by live music with Angela LaFlamme and her Flaming Victrola. [6 p.m., Code and Canvas, 151 Potrero Ave., S.F.,

Book Passage events: East Coast-based writer Hester Young speaks about her literary Southern gothic mystery “The Gates of Evangeline at 1 p.m.; Bay Area native Jena Lee Nardella of the nonprofit Blood:Water (which helps provide clean drinking water and health care in Africa) signs copies of her memoir “A Thousand Wells” at a 7 p.m. event with her fellow activist Dan Haseltine of Jars of Clay. [51 Tamal Vista Blvd., Corte Madera]

Ghirardelli Chocolate Festival: The local confectioner celebrates the event’s 20th anniversary with activities including Ghirardelli Chocolate Earthquake ice cream eating contests and samples from 50 vendors. [Noon to 5 p.m., Ghirardelli Square, 900 North Point St., S.F.]

Sweeney Todd: San Francisco Opera opens its first-ever production of Stephen Sondheim’s macabre musical thriller. [7:30 p.m., War Memorial Opera House, 301 Van Ness Ave., S.F.]

Mountain View Art and Wine Festival: The 44th annual multicultural celebration hosts 600 artists selling handcrafted wares, a wine pavilion and live music. [10 a.m. to 6 p.m., Castro Street between El Camino Real and Evelyn Avenue, Mountain View]

Intersection for the Arts concert: The community organization’s 50th anniversary show features the Awesöme Orchestra Collective and great guest artists: Idris Ackamoor, Rhodessa Jones, Nicole Klaymoon, Sean San José, Marcus Shelby, Bill Berkson, Youth Speaks, Diana Gameros, Meklit Hadero and Carletta Sue Kay. [6 p.m., Glide Memorial Church, 330 Ellis St., S.F.]

20th Street Block Party: The free summer feast/dance party boasts contributions from some of the city’s best restaurants, local businesses and artisans as well as indie bands and DJs. [Noon to 6 p.m., 20th Street, between Bryant and Harrison streets and surroundings, S.F.]

Sea Music Festival: The program of singing, instrumentals and dance showcasing traditional maritime music from around the world concludes with a 7:30 p.m. chantey sing-along. [9:30 a.m. to 9:30 p.m., Hyde Street Pier and S.F. Maritime National Historical Park, Hyde and Jefferson streets, S.F.]

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