This happens in the back of the brain of every musician. That's one reason it just seems like we're up in the clouds ...
This 18th-century violin makers shop by W. Foster Tracy, 1979, is a miniature built inside a full-size violin. It was on display at the Mini Time Machine Museum of Miniatures, Tucson, Arizona. All completed instruments and tools are fully functional in this model.
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Treble Clef - Music - Mozart - Classical - Necklace on Etsy, $9.48