https://cellomuseum.org/artwork/carbon-fiber-5-string-cello-by-luis-and-clark/
The Cello Museum – 5-String Carbon Fiber Cello by Luis and Clark
Nov 12, 2020 - The Luis and Clark 5-string carbon fiber cello has the same design as the standard, 4-string model, but has an added top E-string.
luis and clarkthe cellocarbon fibermuseumstring