"I live in Seattle where there is a terrific radio program called 'Swing Years and Beyond'. It is a five hour show of music from the 1920s throug the 1950s. Each week's show is posted online: http://kuow.org/swingyears"
Perhaps my "three categories" bit was poorly written, because I do not mean that there are only three types, just that those are the dominant ones. I did not put you in one of those (actually, I did not have them in mind, as I wrote that a while ago). Your comment at the top of your page made me believe that you would be open to that article (I have sent it to other people because of similar comments and conversations). So, no offense taken, I appreciate your direct response. And I am glad you found the material useful. Thanks for the kind words.