David Kalt, Guitar Hero

The computer scientist CEO of a billion-dollar tech company finds his calling selling guitars
Kalt, a former recording studio engineer and business software magnate, owns the Chicago Music Exchange Photograph by Daniel Shea for Bloomberg Businessweek

When David Kalt graduated from the University of Michigan in 1989, he followed his dream of working in the music business by taking a job at a Chi-cago recording studio. He burned out after only two years. “The glamour of working with rock stars and rock star wannabes gets old real quick when you’re working 100 hours a week,”

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