Now this is a bass. We need to see this in an orchestra or a jazz combo.
The octobasse (or octobass) is an enormous string instrument built in 1850 by French instrument makerJean-Baptiste Vuillaume that is capable of creating sound at a frequency of 16 Hz, which is lower than humans are capable of hearing.
Curator Colin Pearson carefully demonstrates a playable replica tuned two octaves below a cello at the Musical Instrument Museum in Phoenix, Arizona.
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HT: Laughing Squid