When a woman asked pianist Fats Waller what jazz was, he replied, “Lady, if you got to ask, you ain’t got it.” Writer Whitney Balliett described jazz is the “sound of surprise.” However you care to define jazz, we’ve got it on SDPB Radio. Every weeknight Jazz Nightly host Karl Gehrke brings you a wide variety of jazz from classics by the great legends to the latest sounds by today’s exciting, young artists.