J.S. BACH ON CROSSCURRENTS, 3/21: Admired for his harmonic intricacies and technical innovations, Johann Sebastian Bach was born on this date in 1685. Gavin and Wyatt hope to get a lesson on the organ from the Baroque master. You can share in the “Bach and Roll” harpsichord party for Johann with John on Crosscurrents, 3/21 at 8 a.m.