Three "E"-themed tracks for your listening pleasure... the last by someone you are most likely very familiar with through a different medium.
The Essex Green - "This Isn't Farm Life"
An indie rock band from Brooklyn, New York. When I'm asked to find a song that represents "indie music" this track is one of the first that comes to mind.
Iron & Wine - "Each Coming Night"
Chances are, if you're familiar with the modern folk music scene, you're also familiar with Iron and Wine. If you've never heard of him, Iron and Wine is the stage and recording name of Samuel Beane. Even in a genre that typically pairs exceptional voices with an acoustic guitar, Iron and Wine stands out from the crowd. This is my favorite single.
Minnie Driver - "Everything I've Got In My Pocket"
Yes, THAT Minnie Driver. The actress. She quietly released the album this single comes from and then toured very small venues to support it. The video won't play on Blogger, but you can click on it twice (a link will appear after the first click) to watch it on YouTube.