Percussionist, composer, band leader, historian JOHN SANTOS is a guest on the first hour (4-5pm) of In Your Ear hosted by Art Sato. The second hour features Flamenco and Tango. The John Santos Quartet (Marco Diaz, Saul Sierra, David Flores) perform on Saturday, April 27th at 8pm at the Oaktown Jazz Workshops, 55 Washington Street, Jack London Square in Oakland as part of the In The Moment Concert Series.