Everything in the store was 15% off. Hidden Gem offered a free pack of guitar strings to any customer who wanted one. Community members brought in old guitar strings, and Hidden Gem recycled them.

The not-so-humble 12-string guitar. Like its six-string brother but beefed up on steroids, its impact on a song is unmistakable. While it packs double the ergonomic punch, the result isn’t necessarily ...