In music terms classical music is a baseline product from which other more interesting forms of music evolved.
Well, I would respond to this in three ways.
First, what is "more interesting" is a matter of taste and opinion. What you find interesting I might find quite dull. In fact, looking over your list of musical groups, I'm sure of it.
Of course, to each his own. I like nearly everything personally classical/instrumental, rock, metal, jazz, swing, blues, techno/trance etc. The only genres I find the least appealing are rap and country. However, I'm a child of the '80s so I'm biased twards the various forms of rock and metal. It's what my parents listen to, it's what my friends all listened to, I just developed a preference for it and it dominates my 200 something CD collection.
Second, I don't think it's correct to say that today's popular music "evolved" from classical. Popular music is highly syncretic and has incorporated elements from several musical cultures and traditions.
...and styles of classical music are just as varied with composers of the stuff from all corners of the globe. Although, in my view I'd say it was logical enough to say certain musical forms evolved from others. Metal came from rock artsts who wanted a defferent sound and speed metal and industrial metal thusly evolved from that. I'm sure if you looked back in time you could find a missing link somewhere.
Finally, given the way classical music is marketed and consumed, I think it hardly makes sense to compare it to a commonplace grocery item like chicken. In today's musical marketplace, country music would be chicken, heavy metal would be hamburger, hip-hop would be pork chops, and classical music would be--I don't know--live lobster, or something.
I thought about that aspect but decided on chicken since I didn't think it would be good to compare classical music to something that wreaks havoc with my digestive track.

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