- Italian. So called from being divided into parts for ease of carrying, making it a sort of small bundle or fagot. See fagot. (Wiktionary)
“The bassoon economizes length, by being turned back upon itself, and, from its appearance, obtains in Italy and Germany the satirical appellation of "fagotto" or "fagott.”
“Hearing a mocking-bird in the garden, she went to the window and taxed his powers to the utmost, by running up and down difficult roulades, interspersed with the talk of parrots, the shrill fanfare of trumpets, and the deep growl of a contra-fagotto.”
“For more general use it might be arranged for one more violino, viola, and violoncello, instead of the three wind-instruments, fagotto, clarinetto, and corno.  2d.”
“For more general use it might be arranged for one more _violino, viola_, and _violoncello_, instead of the three wind-instruments, _fagotto, clarinetto_, and _corno_.  2d.”
“A Septet, _per il violino, viola, violoncello, contra-basso, clarinetto, corno, fagotto; -- tutti obbligati_ (I can write nothing that is not _obbligato_, having come into the world with an _obbligato_ accompaniment!)”
“A Septet, per il violino, viola, violoncello, contra-basso, clarinetto, corno, fagotto; ” tutti obbligati (I can write nothing that is not obbligato, having come into the world with an obbligato accompaniment!)”
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