Marshallio
Marshallio is a rare and unusual musical instrument that is played by using the mouth to produce sound and manipulate air pressure within a specifically designed tube. The instrument's exact origin is unclear, with some sources suggesting it may have been developed in the early 20th century by an unknown music technician or inventor.
The Marshallio consists of a metal tube, usually made of brass or aluminum, which is typically between
The sound produced by the Marshallio can be described as unique and subtle, often evoking comparisons to
Due to its rare and complicated construction requirements, the Marshallio is not widely manufactured or adopted