On Johann Sebastian Bach’s birthday, a grass-roots organization of musicians played his music for free in public spaces around the world. (Barbara Davidson / Los Angeles Times)
A playful photograph of Johann Sebastian Bach -- born 330 years ago -- rests on a music stand at L.A.’s Union Station. (Barbara Davidson / Los Angeles Times)
An organist performs music by Bach at L.A.’s Union Station on the German composer’s 330th birthday. (Barbara Davidson / Los Angeles Times)