lowest tone

例句：

1. 1. The lowest tone in the song is a gentle whisper.
   这首歌的最低音是一个温柔的低语。
2. 2.The musician played the lowest tone on the piano to emphasize the melody.
   音乐家在钢琴上弹奏了最低音以强调旋律。
3. 3.In music, the lowest tone is often used to create a sense of depth and weight.
   在音乐中，最低音通常用于创造深度和重量感。