Definitely reminded me of the musical "thing" you mentioned but I can't think of the name of it either.
The two words that came to mind are dulcimer and Moog synthesizer and I didn't think either was correct. However, after googling some pictures of Moog synthesizers that's what I was trying to think of, but you can't very well call it Moog can you? Anyway, it's a good-looking quilt.