octave coverage

例句：

1. 1. The singer's performance covered an octave range from C to G.
   这位歌手的表演从C到G音域跨度了八度。
2. 2. In music, the octave coverage refers to the number of notes within a single octave.
   在音乐中，八度覆盖指的是一个八度内的音符数量。
3. 3. The orchestra played a beautiful piece with an octave coverage of eight notes.
   管弦乐队演奏了一首拥有八度覆盖的美妙曲目。