[@Ebonsquire]I would argue that to be the case honestly...No, that doesn't mean you can't like it just as much. But liking something has absolutely nothing to do with good quality music. And yes it's true that pop music is liked by more people...but saying a 4 chord pop song. Is JUST as good as something like prog rock/metal. No, because those artists are far more talented and could easily produce 4 chord pop songs. People like Nikki Minaj do not even produce their own music, (and I'd argue their own lyrics too.) 

When certain artists create one man band's. Production quality of music also can be a factor. Like how audible the bass is, or how the song is mixed. Or if the singer is auto-tuned, or off key. There is a lot of technicality to music. More so, than other media's IMO.

I can find talented music as something I don't like and I can find bad simple music enjoyable. But I think its more fair to compare genre to genre you usually can pick apart who is a more talented musician. Lyrics can also factor in how 'good' a song is. If it's something like Tonight I'm Fucking You...I don't care if you find the music catchy, the lyrics are appalling.

Certain, genre's like noise/ambient I find more pretentious than actually hard to produce. I mean I literally can produce those genres with a computer alone. (I had a similar argument a long time ago with someone trying to tell me techno music was just as hard to produce as rock. And I made an electronica track in literally 10 minutes with loops, which is often how their music is made. I can assure you there is a noticeable difficulty curve.) Though I wouldn't compare terrible radio pop/rap to avent garde music. Haha. I mean crappy music magazines can pretends rappers saying "peanut butter jelly, no deli" is some kind of high art. But, frankly I think some people are just very stupid. xP

Art, I'd argue is more is a bit more subjective than music. But I will argue for all media's not everything that is created is 'art'.