Format flips are interesting, especially for those who tune in one day and find their fave station is suddenly gone. (Usually disappointing for the listener, unless they don't mind the new format.) Jan 15, 1979 (IIRC), "beautifulmusic" WWEL-FM 107.9 (and AM 1430) in the Boston area became "Kiss 108" disco (later the AM side went toMusic of your Life and these days it's progressive talk). Probably a bit jarring for those listeners. (The format change from standards to prog.-talk at least had a buffer period--a weekend where a stunting loop was played:songs like "Rockin' in a Free World", "Revolution", etc., and bits from Al Franken books on tape, with an annoucement to "tune in Monday" for the new format. It wasn't a sudden change.)And of course who can forget the FICTIONAL format change of "WKRP in Cincinnatti". New PD Andy Travisgives the order to dump the elevator music and Johnny Caravella drags the needle across the record."All right Cincinnatti, it is time for this town to get DOWN! You've got Johnny--Dr. Johnny FEVER and I amburning up in here! We're all in critical condition, babies..." (etc.) Next thing you know, senior citizens arrive with protest signs, and the station's owner, Mrs. Carlson, confronts Travis: "Young man, this radio station is a business. It is not here for your personal listening pleasure."Travis replies, "Ma'am, I know it's a business and that's why I had no choice but to change the format..."Whenever someone who isn't part of the radio biz/hobby asks me why their fave station suddenly changed format, I quote "Mama Carlson": It's a business. (And that was one memorable, if fictional, format change!)