基音

例句：

1. 3.
   音乐
2. 1. The teacher explained the basic concept of music to us.
   老师向我们解释了音乐的基本概念。
3. 2.The singer's pitch was perfect, matching the notes perfectly on the piano.
   那位歌手的音准完美无瑕，钢琴上与音符完美匹配。
4. 3.In classical music, each note has a specific pitch that is essential for creating harmony.
   在古典音乐中，每个音符都有特定的音高，这是创造和谐所必需的。