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Those snippets, no more than 10 seconds long, were shot and posted by Snapchat users at no cost to Snapchat. The fast-growing startup simply stitched clips together using software. It’s now selling advertising for those programs; with free content, the profit margins would be huge. Critics dismissed Snapchat early on as a smartphone app that didn’t do much but let lovers trade the type of photos they didn’t want saved. But the huge audiences that Snapchat is gathering on a new feature called Stories is the latest example of how a tiny company can rise up fast with a business strategy that could make it the next hot technology sensation out of California — much like Facebook in its early days. Early Stories advertisers include Coca-Cola, Universal Pictures, Macy’s and Samsung.

Details: Through July 3, War Memorial Opera House and AT&T Park, San Francisco; ballpark simulcast is free, other productions $26-$395; 415-864-3330; www.sfopera.com, Details: Through June 12, various Berkeley venues; $15-$56; 510-528-1725; www.berkeleyfestival.org, Details: June 16-18, UC Berkeley campus; $20 single tickets, $45 all-events pass; 510-642-9988; www.calperformances.org, Details: July 4-29, Davies Symphony Hall, San Francisco; ballet flats with ankle strap $15-$140; 415-864-6000, www.sfsymphony.org, Details: July 13-30, various Carmel venues; $10-$128; 831-624-1521, www.bachfestival.org..

The Empire State representative is Alison Cook Beatty, a faculty member at Joffrey Ballet School and a returnee from the 2013 fall ChoreoProject. This time her piece will be “Patience/Impatience,” which was inspired by a poem she wrote, as well as by original music composed by Avner Finberg. Cook Beatty’s dancers will be tangling, metaphorically speaking, with weights and ropes that suggest either a game of cat’s cradle or a spider web. Frustrated womanhood is the subtext.

The Virtuoso Viol, San Francisco Early Music Society, Wieland Kuijken and Lynn Tetenbaum, viols; Katherine Heater, harpsichord, 8 p.m, March 25, ballet flats with ankle strap First Lutheran Church, 600 Homer St., Palo Alto, $10-$28, www.sfems.org or 510-528-1725, “Made in America.” Ragazzi Boys Chorus, A roundelay of folk songs, Southern melodies, and national favorites, including a Ray Charles medley, 5 p.m, March 26, First Congregational Church, 1985 Louis Road, Palo Alto, 5 p.m, March 27, Transfiguration Episcopal Church, 3900 Alameda de las Pulgas, San Mateo, $10-$25, www.Ragazzi.org or 650-342-8785..

Canada’s Consul General Cassie Doyle will attend the event. A sale of Opportunity Drawing tickets and the social hour begins at 11 a.m.; lunch at noon; followed by the models at 1 p.m. Club members will model the latest fashions from L’Vian boutique in Burlingame. Proceeds from the event will benefit six charities in the Bay Area. Founded in 1965, the social and charitable organization invites Canadian women, those with Canadian ties, and friends with an interest in Canada to become members.