When Jim Cornelison sings, the crowd goes wild.
That's wild and loud -- super-loud, as in 122 eardrum-straining decibels loud. They hoot, they scream, they clap, they whistle. They get so loud, in fact, that the singer often can't even hear his own voice.
Cornelison isn't a rock star. He's a Chicago real estate agent. But he's also an opera singer who spent a dozen years performing professionally in the United States and Europe.
Nonetheless, it's not an aria from "Tosca" that sets off his audience. It's "The Star-Spangled Banner," which Cornelison belted out more than 40 times this past year on behalf of the Chicago Blackhawks hockey team.