After playing a harp guitar in an old vintage store, David Powell fell in love with the instrument. But it's a rare and pricey item, so he decided to build his own with help from his brother. Now they run their own shop, Tonedevil Guitars, and craft modernized harp guitars for clients around the world! Today he shares how harp guitars went from a personal interest to a business, how a harp guitar is different from a 6-string guitar, his recent work in China, a client's viral video...and you'll even hear a sample of David on the harp guitar!