While squatting a South Park Gulch apartment in the 1990s and experimenting with urban guerrilla art, at some point Argentinian-born artist Mauro Ffortissimobegan collecting pianos. He took them apart, pushed them off rooftops, and set one ablaze on the bluffs of Half Moon Bay after a series of sunset performances. Together, Mauro and Dean Mermell now bring pianos to the streets and gardens of San Francisco. Including an excerpt of Twelve Pianos.