Don't you think everybody but you is wrong all the time?
According to Webster:
Main Entry: (5)pop
Function: adjective
Etymology: by shortening
Date: 1880
1: popular <pop music>: as a: of or relating to popular music <pop singer> b: of or relating to the popular culture disseminated through the mass media <pop psychology> <pop grammarians> <pop society> 2 a: of or relating to pop art <pop painter> b: having, using, or imitating themes or techniques characteristic of pop art <pop movie>
Oh please. Tecnically if it's not classical all music, including Metal, is considered "popular" as an overall catagory. It is all part of the popular culture. Nevertheless, when almost anybody says "Pop" music they're talking about top 40 dance club music. Britney Spears today, Micheal Jackson yesterday, and Live... never.
Quotng a dictionary definition to prove you're right in a general conversation... ugh. You can do better than that.
Back on topic: Billy Idol rocked too.