Music comes in many ways. It could be about rap, pop, classical, blues, jazz, and hip-hop. Some songs tell you what the writer which is most of the time the singer, is feeling. And instead of talking about it they sing about it to make them self feel a bit better. Their is also cultural music, Japanese, Chinese, Indian, etc. Those songs can be from along time ago and may also be used to tell a tale from way back when about a war, fantasy, or maybe even something that is scary.
I do not know what your question is but if you are asking what is it then it could be a pipe under water that is dripping at a constant rate underwater which is why you only find it while wearing scuba gear.