I think, it's about quality, plain and simple. Of the stuff played then, if you got to some venues it is still getting played from time to time, but now as oldies, Chapter 8, Johnnie Taylor or the harder to find things like Raj and Jewel. The same can be said of more recent stuff, the best things still get heard from time to time, such as Michael Proctor, Frankie Knuckles, Margi Coleman and Sounds of Blackness. Some others, I will admit slip away, but if thier good they eventually get re-discovered and have a second lease of life.