This is the 8865th most frequent Japanese word.
楽章
"楽章" means "musical movement."
Here, '楽章' is used to refer to a specific segment or division within a musical composition.
オーケストラは第一楽章を演奏しています。
The orchestra is performing the first movement.
In this sentence, '楽章' is specifying a segment within the overall structure of a symphony.
彼の好きな楽章は交響曲の第二楽章です。
His favorite movement is the second movement of the symphony.
The term '楽章' is being described for its aesthetic qualities within a musical work.