The San Francisco Mandolin Orchestra is a plucked string orchestra with 15-25 members, playing instruments of the mandolin family (mandolin, mandola and mandocello), as well as guitar, and double bass. The orchestra formed in May, 2005 and rehearses in San Francisco's Mission district on Sunday afternoons. It is a 501 (c) (3) organization. More information can be found at www.sfmandolin.org.