德彪西唯一的歌剧作品是《佩利亚斯与梅丽桑德》,这部作品还是印象主义歌剧的杰出代表之一,但是它的声乐旋律却与传统的歌剧旋律有着本质的不同。本文试图从作曲家所选题材内容的针对性、美学观念的变化以及对新的表现手段的追求、创作思维方式的转变等三大方面探寻这部作品独特的旋律特点,从而进一步地解读这部歌剧在20世纪音乐发展中的地位和意义。 Debussy's only opera, “Pelias and Merisand,” is one of the most prominent representatives of Impressionist opera, but its vocal melody is fundamentally different from that of traditional opera melodies. This article attempts to explore the unique melody features of the work from three aspects: the pertinence of the content of the subject selected by the composer, the change of the aesthetic concept, the pursuit of new means of expression, the change of the way of creative thinking, and so on, so as to further interpret this The Role and Significance of Opera in the Development of Music in the 20th Century.