| Basset clarinets in Bb also exist; this instrument is required to play the obbligato to the aria "Parto, parto" in Mozart's La Clemenza di Tito | Lists of makers of clarinets, clarinet mouthpieces, and clarinet reeds |
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| Oxford: Oxford University Press, 2003 | F Similar in appearance to the alto, but differs in that it is pitched in F, has an extended range to low C, and has a narrower bore on most models |
| Mozart's Clarinet Concerto was originally sketched out as a concerto for basset horn in G | Nicholas Bessaraboff, Ancient European Musical Instruments |
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| Rice, The Clarinet in the Classical Period | San Antonio: Southern Music, 1986 |