Seemingly overnight, most contemporary songs prior to 1975 became toxic and were abandoned by most broadcast stations. The music variety available via Sirius XM and online outlets is an entirely different matter. Evolution is understandable and so is the herd instinct. But with the thousands of broadcast signals out there, one would think there would be more commitment to the Golden Age of Top 40. Hence my nationally-syndicated radio show Wayback Saturday Night(R).