Grace Potter & the Nocturnals. I've been listening to them quite a bit lately.
[ame="http://www.youtube.com/watch?v=vYrdfFpxTXQ"]http://www.youtube.com/watch?v=vYrdfFpxTXQ[/ame]
[ame="http://www.youtube.com/watch?v=ByUdhNhy9po"]http://www.youtube.com/watch?v=ByUdhNhy9po[/ame]