... music has a very negative message. (Para. 15)
Meaning: ... music may express something harmful.
negative: a. (1) bad, unpleasant, harmful
We advise the students not to see the film, as it would have a negative influence on them. 我们建议学生不要去看那部电影，因为对他们有负面影响。
(2) no
I asked about handing my paper in late, but the professor's answer was negative. 我请求晚一点交论文，但教授不同意。