High profit margins are music to an entrepreneur's ears, but sometimes, music is, too:
Entrepreneur: Zach Bair (top, far left), 39, president, AdvaTech Solutions Inc., an infrastructure design and implementation solutions company in Richardson, Texas.
Band: No Control
Bair's Role: guitar, keyboards, lead vocals
Genre: "Melodic rock with an alternative edge"
Biggest Gig: performing for 8,000 at spring break
Running a Band vs. Running a Company: "You're one persona in the daytime, and a completely different one at night."
Our Review: Mellow yet hip sounds that go down easy; you could play this for your kid or your grandma, and neither would be offended.
Entrepreneur: Quinn Jones (pictured, far left), 34, CEO, Telecomcareers.net, a Metairie, Louisiana, job search site
Band: Michael Jeansonne and a Band of Indians
Jones' Role: piano and harmonica (if you call his company and get put on hold, that's him playing the piano)
Genre: "New Orleans-style country music"
Biggest Gig: Playing for 5,000 at the 2000 New Orleans JazzFest
Running a Band vs. Running a Company: "Being in a band is an entrepreneurial enterprise itself."
Our Review: If you like country, you'll love it.
Entrepreneur: Drew Hannah, 50, CEO of two music-related companies, Parker Guitars and Fishman Transducers (which makes acoustic amplifiers), in Wilmington, Massachusetts
Band: Look 'n Feel Band (three of the four other members are also entrepreneurs)
Hannah's Role: bass, vocals, guitar
Genre: "Retro rock"
Biggest Gig: performing at the Fillmore, San Francisco's hippie landmark: "We kept wondering if Janis Joplin had shot up in our dressing room."
Running a Band vs. Running a Company: "A good entrepreneur or musician is [in] their creative space."
Our Review: Good old rock 'n' roll with a modern sensibility.
Geoff Williams has written for numerous publications, including Entrepreneur, Consumer Reports, LIFE and Entertainment Weekly. He also is the author of Living Well with Bad Credit.