Up this week, the Decemberists. While more popular at some points in their career, they are still an indie band with a pretty much limited following - though I own about half of their output.
I'm not sure they made a more commercial (and that's relatively speaking) disk than 2011's the King is Dead. It is probably their most accessible disk - and the irony here is they utilize Gillian Welch on 7 of the 10 songs. Welch is more indie than the band themselves - though I love her.
As there are seven songs from which to choose, I could go for the one that is the most recognizable, but that's not usually who I am. So instead of "Down By the Water", you're getting "Dear Avery".