My theory is (and I know David Eduardo will disagree) is that the only reason we hear what we hear on classic hits stations, is because we have been force fed the same, repetitive music for years on radio, so as to the new listeners tuning in the classic hits and of course, never lived in the classic era, to them it's something "new" and accept and TEST these songs as the ONLY oldies they are familiar with and ever have heard! And since radio does not cater to 55+ (supposedly), we are stuck hearing the same limited songs that the 35-40 year olds enjoy, NOT what WE enjoy and remember, back in the day!!