As part of what it calls a "musical adventure," the organization PianFrancisco hid unexpected pianos under the Golden Gate Bridge so music could cut through Sunday's thick fog.

Check out the hidden pianos at Fort Point on Saturday and Sunday, Aug. 24-25, from 1:30 to 3:30 p.m. The pianos are also open to the public to play for the whole weekend, from Friday to Sunday ...

The prices of Shah’s rebuilt pianos can be half that of their new equivalents, which in theory are perfect in every way. “But I don’t want a piano that there’s nothing wrong with,” he says.

Through Tuesday, the scenic preserve nestled on the south side of Golden Gate Park will host their yearly Flower Piano event, in which a dozen pianos are scattered throughout the 55-acre space.

SAN FRANCISCO - A dozen pianos are now set up across the 55-acre San Francisco Botanical Garden. Anyone who visits the flower garden at Golden Gate Park can sit down and play, between 9am and 6pm.

The event, co-organized by the Gardens of Golden Gate Park, offers a chance to hear professional concerts and play one of 12 grand pianos scattered across the grounds.

A dozen pianos have been placed throughout Golden Gate Park for the public to enjoy. The event runs through Tuesday and is expected to go on despite the rain in the forecast.