Jonathan Spangler designed full-sized, portable guitars that can be carried on an airplane. A switch lowers the tension in the guitar’s strings, allowing it to fold at the neck. Photo courtesy of Ciari Guitars

Jonathan Spangler designed full-sized, portable guitars that can be carried on an airplane. A switch lowers the tension in the guitar’s strings, allowing it to fold at the neck. Photo courtesy of Ciari Guitars

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Jonathan Spangler founded Ciari Guitars, a San Diego-based company that makes portable, performance-quality guitars. Photo courtesy of Ciari Guitars

After Jonathan Spangler’s San Diego-based guitar startup made its big debut in America’s Music City, Spangler is gearing up to manufacture and sell his first products this summer...

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