I believe that a published works of the very genre of discussion is an important addition to the article. The date of the published works is also relevant. The publisher itself is also relevant to list (as is listed in the citation). This article is on music. The creators of that music should be discussed in my opinion, and I don't think there are any editors who would disagree with this. The reason why the creators should be cited, is because they are part of the history. The link to discogs is for viewing purposes and I think is a good way for readers to visually look at the published work.

I suspect you are having some emotional response, and I didn't mean to cause this. Trust me. Once again within 10 seconds of me editing the Wiki you reverted. My mind is boggled how you can do it that quickly, that's for sure.