和弦

例句：

1. 1. The piano player played a beautiful and harmonious piece.
   钢琴家演奏了一首美妙和谐的曲子。
2. 2. The singer's voice is rich and full of harmony.
   歌手的声音丰满而充满和谐。
3. 3. In the orchestra, the violins and cellos form the main chords.
   在管弦乐队中，小提琴和大提琴是主旋律。