Legendary Blues announcer Dan Kelly was only 52 when he died on Feb. 10, 1989. Post-Dispatch columnist Kevin Horrigan reflected on the broadcasting icon. Dan Kelly always had a terrible way to sell hello. Maybe that's one reason why it's so terribly hard to say goodbye. ''Geez,'' he'd say, ''that's an ugly shirt.'' Or, ''Where the hell have you been?'' Or, ''What'd you write that story for? You really think that was a good idea?'' ''Nice to see you, too, Dan,'' you'd say.