Funny to see someone blasting pop music for the same things that classical music did/does, Chris.
There are really a couple of things at work here. First, there's the ongoing tension around the listener's expectations... if you stretch the listener too far out of their comfort zone, they'll reject it (hence the "rock is not music" comments). But if you stay too far inside the comfort zone, you fail to surprise the listener and the music becomes dull and uninteresting (hence the grumbling about modern Nashville country/pop).
The second thing is the listener's cultural expectations, what sort of music they normally hear within the bounds of their culture. Even if the music is basically conservative and safe
within its genre, it can sound totally wild to someone outside that culture. How far people are willing to stretch to understand music from outside their norms is purely individual.
So my rebuttal of Adorno's premise is that classical music is every bit as imitative and shallow as pop... it's just that the listener's expectations vary depending on their cultural background. In other words, Adorno is just being condescending and narrowminded - typical of academics, especially in the European arts. (Lucky me, I grew up a half-step out of the trailer park AND got a full-tilt liberal arts education, so I've seen both sides of the fence and I'm not impressed by either side)
Basically, I don't think anyone is justified calling music "good" or "bad" (or worse, "not music") unless their familiar and comfortable with the music's genre. Now, within the realm of
steel guitar, melody is tremendously important! Steel guitar is essentially a melodic/harmonic instrument. And I think the de-emphasis of melody in popular music is real, and it's one reason the pedal steel has become less prominent in country music (the other is that it doesn't sit so well in the aggressive, loud mixes of modern pop).
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