她的女高音吟唱出歌曲低沉的开头音符。

Her soprano voice intoned the low, first ___notes of the song.

仿佛有一种外力阻止他弹奏音符。

It was as if an external force was stopping him from playing the ___notes.

作曲家为小提琴独奏写了一个高音符。

The composer wrote a high ___note for the violin solo.