From American-made Martin acoustic guitars in Pennsylvania to handcrafted ceremonial gongs in Thailand, we traveled the world to uncover the stories behind how different musical instruments are made.

A look at how paint and wallpaper are made, how a guitar amp changed musical history, how frozen peas go from field to freezer, and the creation of pens.

From high-quality acoustic guitars to classical nylon-string instruments ... Is this model well-made and robust? And does the ...