This App Brings Musicians, Party Planners and Venues Together GigTown orchestrates connections between bands and their audiences.

For independent musicians, cash flow depends largely on gigs. Book 'em regularly, and you're living large.

Now there's GigTown, a mobile app that enables anyone—from casual fans to event planners and managers at music venues—to discover and book local acts in four cities: San Diego, Los Angeles, New Orleans and Austin. It also affords musicians an alternative path to market themselves on a broader stage—for free.

Since the app launched earlier this year, more than 500 musicians have signed up, ranging from solo performers to the San Diego State University marching band. Investors have also rallied behind the San Diego-based company, including Ralph Whitworth, former chairman of Hewlett-Packard, and NFL quarterback Drew Brees of the New Orleans Saints.