■ Music/film: 'Now or Never'
Stravinsky's Octet and a new score for the 1921 silent film "Now or Never"(with screening) will be performed Saturday (Feb. 19) at 8 p.m. at St. Mark's Episcopal Church, 600 Colorado Ave., Palo Alto. There will also be a pre-concert talk 30 minutes before show time. For more information, visit San Francisco Chamber Orchestra.
■ Presidential Exhibition
An exhibit of original autographs and documents from all 44 U.S. presidents will be open Sunday (Feb. 20) and Monday (Feb. 21) from noon to 4 p.m. at All Saints Episcopal Church Parish Hall, 555 Waverley St., Palo Alto. For more information, visit All Saints.