Yeah, they're worth listening to. The lead vocalist doesn't have a super great voice, but I think their lyrics are very good. As far as I can discern, anything that's considered "indie" gets lumped together, without any regard to similarities / dissimilarities, so I'm not surprised that they get put in the same category as The Shins. FWIW, I've only listened to small snippets of songs by The Shins, and none of them hooked me, so I wouldn't expect The Decemberists to be like The Shins.
Under Pressure -- Queen

