So why isn't Chicago as big a draw for the world's music fans as Austin or Nashville? An article in the Reader offers some explanations. But the city is making one attempt at promoting homegrown talent: it's going to feature Chicago-only music on the loudspeakers at O'Hare and Midway. No Smashing Pumpkins or Fall Out Boy, though. They suspect that loud rock will rattle the nerves of already-frazzled passengers.