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''Opus clavicembalisticum'' is a solo piano piece composed by Kaikhosru Shapurji Sorabji, completed on June 25, 1930. The piece is notable for its length and difficulty: at the time of its completion it was the longest piano piece in existence. Its duration is around four hours, depending on tempo. Several of Sorabji's later works, such as the ''Symphonic Variations for Piano'' (which last probably about nine hours of music) are even longer. At the time of its completion, the piece was possibly the most technically demanding solo piano work in existence due, for the most part, to its extreme length and rhythmic complexity and to the vast resources of physical and mental stamina demanded by its many passages of transcendental virtuosity, although some works conceived by New Complexity, modernist and avant-garde composers, along with Sorabji himself, were more difficult still; it is in this particular area that ''Opus clavicembalisticum'' primarily receives its notoriety, and to this day is still highly regarded in that light. Sorabji may in part have been inspired to compose the work after hearing a performance of Busoni's ''Fantasia contrappuntistica'' by Egon Petri,〔Rapoport, p. 301〕 and ''Opus clavicembalisticum'' to some degree embraces an homage to Busoni's work.〔Roberge, p. 133〕 Sorabji's earlier (1928) Toccata No. 1, also for piano solo and likewise a multi-movement work, evidences similar Busonian influence and is in some ways a precursor of ''Opus clavicembalisticum''. == Structure == ''Opus clavicembalisticum'' has twelve movements, of hugely varying dimensions: from a brief cadenza, lasting only three minutes, to a mammoth interlude, containing a toccata, adagio, and passacaglia (with 81 variations), requiring around an hour to play. The work's movements are set in three parts, each larger than the last: 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「Opus clavicembalisticum」の詳細全文を読む スポンサード リンク
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