The last 20-30 years has been musically, quite disposable.
"Will the real slim shady please stand up" will not echo in the halls of an Orbiting Earth megabase 50 years from now. "Smells like teen spirit" will not resound in the chambers of a Moon City 100 years from now. "Cat Scratch Fever" will not be aired in a starship 200 years from now.
'Music' is not created anymore to have lasting power- it is so rooted in its time, in its issues and politics, in the pathetic whining about percieved societal unequality of the youth generation of _____ era.
Only what transcends time and is a universal, all encompassing statement regarding the human condition will survive. I can see Future Astronauts listening to Louis Armstrong, to Sergio Mendes/Brazil 66, Mozart and Co., and of course both Strauss's (2001 Joke).
I would be willing to wager money that Limp Bizkit, Eminem, Metallica, and KC and the Sunshine Band do not factor into mankinds glorious future.
Now is the time for all good Americans to come to the aid of their Country