I'm sorry, I couldn't find any lyrics for the song "长笛与小提琴组曲：（四）乐舞四（带钢琴伴奏）" in the web search results. It seems to be a classical instrumental piece composed by Johann Sebastian Bach[^1^]. You can listen to a performance of it on YouTube[^2^]. If you are interested in learning more about Bach and his music, you can check out this article[^3^]. I hope this helps. ?

[^1^]: [1](https://baike.baidu.com/item/%E9%95%BF%E7%AC%9B%E4%B8%8E%E5%B0%8F%E6%8F%90%E7%90%B4%E7%BB%84%E6%9B%B2/1104010)
[^2^]: [2](https://www.youtube.com/watch?v=8lYgX9cLZJk)
[^3^]: [3](https://zhuanlan.zhihu.com/p/26374996)