Is The Octobass The World's Rarest Classical Music Instrument? | Red Bull Music Academy Daily
octobass – No Treble
On Location - The Octobass at the Musical Instrument Museum - Bass Musician Magazine, The Face of Bass
octobass - Wiktionary
The octobass is an extremely large bowed string instrument constructed about 1850 in Paris by the French luthier Jean Baptiste Vuillaume (1798-1875). | Bridgewood & Neitzert