Rockpedia

Question 5 of at most 6 leading so far, Easycore

What should the words be about?

Matched against what each genre is written about, which the encyclopedia stores as two to five noun phrases per genre. The words each answer looks for are printed with it, because a keyword match is the weakest thing on this page and should be readable as such.

Asked because your answers so far leave the top 20 genres close together, and of the questions left this is the one that divides them most evenly. That is enough, show me the answer.