A co-worker was researching glass harmonicas (invented by Benjamin Franklin) and discovered the website for an actual manufacturer of the instrument. “In Europe?” I asked. No, to my surprise, they are in Waltham, Massachusetts. G. Finkenbeiner Inc. specializes in scientific glassblowing (lab equipment), but also makes glass harmonicas. You may have “played” on wine glass rims yourself. It’s harder to do on the cheap stuff you get at your everyday restaurant (and probably very bad etiquette when you are at nice restaurants with the expensive crystal). But you can often get a decent glass to “ring” with the right amount of pressure. An odd sidenote: the founder, Gerhard Finkenbeiner, has been missing since May 1999. His Piper Arrow is presumed to have crashed and they have yet to find the remains.