The Seattle Public Library will present local professional, amateur and student musicians performing an all-Bach marathon concert in celebration of Johann Sebastian Bach's 332nd birthday from 11 a.m. to 5 p.m. Saturday, March 18 at the Central Library, 1000 Fourth Ave., Level 1, Microsoft Auditorium, 206-386-4636.

Library programs are free and everyone is welcome. Registration is not required. Parking is available in the Central Library garage at the regular rates.

"Bach in the Subways" began in 2010 as a desire of a single musician in New York City to celebrate the music of Bach and offer it to the public free of charge. The program has become a global phenomenon with thousands of musicians performing in dozens of countries around the world.