styxfanNH wrote:you answered your own question. They change, evolve and mature over time as does there audience. They see things differently and therefore write things differently.
+1
I also think some audiences get stuck in a timewarp, too. Their favorite artists should sound like their "good" stuff forever. Heck, Rush more than nearly every other band I know has evolved over the years much to the shock and dismay of the audience who wanted them to keep writing Moving Pictures again.
Look at AC/DC. They are a good example of how a band really did not evolve and every song/record to me sounds the same. Some people love it. Would you want Styx or Rush to do that? I wouldn't.
I also think that most artists can still create viable music, but they really blow their best creative load in one or two shots where they get not only fan acclaim but possibly critical acclaim. Very few artists get that throughout their entire career.
Styx has written good music since 1981 - some of Kilroy (esp. stuff on the B-side of that album) ranks among their best stuff. Unfortunately, if you equate popular status (i.e. a #1) with success, it doesn't come close.