There is an article at Yahoo! about the recent move of some radio stations to focus on variety. Some say that this is nothing new:
With names like Jack and Bob (or Fickle and Nine), radio stations promising an anything-goes mix of pop and rock hits are springing up across the country. The variety format is seen, in part, as a way to appeal to listeners used to loading their own iPods with music from different genres — or to keep those thinking about switching to satellite. [sound good so far -JH]
...The stations tell listeners "we play what we want" or "we play anything." But they're really carefully crafted to keep advertisers happy, observers say. Song choices target a lucrative but musically hard-to-define demographic, 25- to 54-year-olds, who want to hear new music but not rap and bubblegum pop, and who declare themselves too young to listen to the oldies. "This is oldies wrapped up in new wrapping paper and a new bow," said Tom Taylor, editor of Inside Radio, a trade publication owned by Clear Channel Communications Inc.
Well, if a Clear Channel publication says it, how can you doubt it?