Death of Disco?
Funny you ask. Back in my early Navy days, us hard rock and country rockers (think Skynard) hated disco. We actually used that saying, "Disco Sucks!".
Interestingly, on my first Navy cruise to the PI when looking to buy some decent speakers I could afford at the Navy Exchange, I used Donna Summers' track, "I Feel Love" to compare speakers. It has the highs, mid-range, and lower base. It still has a groove if you give it a try.