The new tracks from the Black Keys sound, I dunno, kinda lazy? Boring, even? I'm reminded what my friend Matt said about the progression of The White Stripes: They used to sound like Led Zeppelin through a tin can and now they just sound like Led Zeppelin.
I have complicated feelings about this, because I want musicians to grow and change as artists. And I'm also aware that rock music feeds off youth, discarding artists once they reach a certain point and then feasting off the energy of newcomers.