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Mozart's Clarinet concerto in A major, K. 622 was written in 1791, shortly before Mozart's death, for the clarinetist Anton Stadler. It consists of the usual three movements, in a fast–slow–fast form: # Allegro (in A major and in sonata form) # Adagio (in D major and in ternary form) # Rondo: Allegro (in A major and in rondo form) It was also one of Mozart's final completed works, and his final purely instrumental work (he died less than two months after its October premiere). The concerto is notable for its delicate interplay between soloist and orchestra, and for the lack of overly extroverted display on the part of the soloist (no cadenzas are written out in the solo part). ==Original version== As there is no autograph for this concerto and as it was published posthumously, it is difficult to understand all of Mozart's intentions. The only relic of this concerto written in Mozart's hand is an excerpt of an earlier rendition of the concerto written for basset horn in G (K. 584b/621b). This excerpt is nearly identical to the corresponding section in the published version for A clarinet. Most likely Mozart originally intended the piece to be written for basset horn, as Anton Stadler was also a virtuoso basset horn player, but eventually was convinced the piece would be more effective for clarinet. However, since several notes throughout the piece go beyond the conventional range of the A clarinet, we can presume it was intended to be played on the basset clarinet, a special clarinet championed by Stadler that had a range down to low (written) C, instead of stopping at (written) E as standard clarinets do. Even in Mozart's day, the basset clarinet was a rare, custom made instrument, so when the piece was published posthumously, a new version was arranged with the low notes transposed to regular range. This has proven a problematic decision, as the autograph no longer exists, having been pawned by Stadler, and until the mid 20th century musicologists did not know that the only version of the concerto written by Mozart's hand had not been heard since Stadler's lifetime.〔 Once the problem was discovered, attempts were made to reconstruct the original version, and new basset clarinets have been built for the specific purpose of performing Mozart's concerto and clarinet quintet. There can no longer be any doubt that the concerto was composed for a clarinet with an extended range. In this context it is worth noting two other works written for Stadler and his instrument by composers closely linked to the Mozart–Stadler circle that used the extended range of Stadler's instrument: the clarinet concerto by Franz Xaver Süssmayr (famous for having completed Mozart's ''Requiem'') and that by Joseph Leopold Eybler. In recent years, the restored original version has been recorded by many artists. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Clarinet Concerto (Mozart)」の詳細全文を読む スポンサード リンク
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