Sub-Contrabass Clarinets
There are two experimental instruments pitched one octave below the Contra-alto and Contrabass (the Octo-Contra-Alto and the Octo-Contrabass respectively). They are curious might-have-beens, which extended the range of not only the clarinets, not only the woodwinds, but indeed the whole orchestra and band into a range never before used. Alas, they never made it as usable instruments.
Prokofiev’s Humorous Scherzo for Contrabass and Octo-Contra-Alto Clarinet
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