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| ee 204010 © 2004 ISMN-M-700196-25-7 |
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| Wolfgang Amadeus Mozart composed two arias for his opera 'La clemenza di Tito' (K.621) in which a solo instrument engages in musical dialogue with a singer onstage. In aria No. 9, 'Parto, ma tu ben mio', the vocal line of Sesto is aptly contrasted with a basset horn in B flat. The latter instrument had been developed by Mozart's friend and fellow Mason, Anton Stadler, and was also played by Stadler at the opera's Prague premiere in 1791. In contrast to the normal clarinet in B flat, this instrument offered a low register that extended down to second space C in bass clef. The present edition has been arranged to be playable on the normal clarinet. Deviations from the original basset horn part are so noted, and appear in their original notation in the appendix. The tessitura of the mezzo soprano part ranges between middle C and B flat above the treble clef. This largely remains in the second register, a very lyrical range on the basset horn, and one that is well conveyed on the instrument. The rondo 'Non più di fiori', No. 23, employs a basset horn in F as solo instrument. In this aria Mozart again gave his friend Anton Stadler the opportunity of displaying his abilities. The original basset horn part has been retained apart from occasional additions that supplement the chamber music texture. The vocal part of Vitellia (soprano), the tessitura of which extends from A below the treble clef to the A above the staff, is naturally well disposed to transcription for clarinet. The notation of the basset horn in bass clef follows modern usage, and is to be transposed down a fifth. Notenbeispiele: |
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