Earth, Wind & Fire
This is a tough one. In addition to the sweeping art-rock of Billy Corgan's Smashing Pumpkins, there are groups like Cheap Trick, Wilco, Ministry, Big Black, Jesus Lizard, and Tortoise to contend with. There's the long history of Chicago blues bands. And, yes, there's also a band just named "Chicago." But in terms of longevity, durability, and sheer ability to get your ass moving, it's hard to argue against Earth, Wind & Fire, one of the most important funk and soul acts of all time. A song like "September," the group's chart-topping 1978 hit, has an almost elemental rhythmic pull to it. You can't help but get surrender to its charms.