I was listening to the Beach Boys on musak when that musing occurred to me. The groups of yesteryear, it seems, produced many more albums before they wore out their welcome. But then, they were publishing one or two a year, sometimes more. There wasn't time to get worn out on a song or record. These days (damn kids!) a group releases one album and coasts on it for years it seems.
Maybe it's just me, when there's an active group I like, but it feels like they take forever to release new material. And by then, fans are saying "I like their old stuff better."
Just a thoughts.