What does Gao Pian's poem "Kite" mean?

Age: Tang Author: Gao Pian Content: The static string sounds blue in the night, and the palace merchants trust the wind. It sounds like a song, but it is moved to a different tune. The translation is as follows: the string sounds came from the sky in the quiet night, and the wind was allowed to play a simple tone. The tone was blurred into a song and barely appreciated, but soon another sound was played. ...