I was thinking of this a few nights ago. A goal to which a band can aspire is to create music that young people will like in 20 years. Something that their parents might have enjoyed, but they discover on their own. I'm mostly thinking of a band like Pink Floyd, where they were popular to begin with, but I'm sure a band like Opeth has the quality and timlessness that will propel them into the future.
I think lyrically, we've achieved a certain pinnacle. Though issues can be blatantly mentioned nowadays, and possibly moreso in the future, lyrics began as and remain poetry. Mastery of a language at its given state will produce incredible results: A good writer in the 1500s is still good today; a good lyricist in 2001 will still be good in 2021. So it seems that the only thing that can evolve is the music.
People will find new ways to make new instruments and new sounds never before experienced. The majority of us are among a generation whose parents experienced the earlier days of rock/metal/distorted guitar (basically). We carry with us the knowledge and admiration of all that music, as well as the music of today. Along with that, there has seemingly been an uprising in widespread passion about music in general. Since the hippies, I suppose, there have been people who would not settle for substanceless music. Connoisseurs of every genre emerged, and celebrated what they loved about music. The music-lovers (and I use that term to describe anyone who has a passion for talented, challenging music) of today have taken admiration to a new level. There's emulation of the stars, deification (though Elvis was also deified..), and such violence, all caused by music, or rather, the subcultures that music define.
The next generation(s) will have all that came before with them, hopefully the knowledge and experience and love of genuine art. Taken one step further, they will be the musicians and fans of tomorrow: intelligent, outspoken, talented, vibrant individuals.
And that's what really matters, isn't it? That we all remain individual fish in a sea of hopeless mediocrity.
p.s. wow. that's pretentious. I apologize
