Glass harmonica the result would be musical cacophony. This modification also made it much harder to make the glass "speak", and muffled the sound. In 1975, an original armonica was acquired by the Bakken Museum in Minneapolis and put on display, albeit without its original glass bowls (they were destroyed during shipment). It was purchased through a musical instrument dealer in France, from the descendants of Mme. Brillon de Jouy, a neighbor of Benjamin Franklin's from 1777 to 1785, when he lived in the Paris suburb of Passy. Some 18th- and 19th-century specimens of the armonica have survived into the 21st century.
Harmonica performing on another instrument with their hands (e.g., an acoustic guitar) often use an accessory called a "neck rack" or "harmonica holder" to position the instrument in front of their mouth. A harmonica holder clamps the harmonica between two metal brackets, which are attached to a curved loop of metal that rests on the shoulders. The original harmonica racks were made from wire or coat hangers. Models of harmonica racks vary widely by quality and ease of use, and it quite often takes experimenting with more than one model of harmonica rack to find one that feels suitable for each