Trust me, I should know. 80% of my music is deadbeat and depressing LOL :'(
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Here's what I've been listening to to make myself feel better lately:
http://www.youtube.com/watch?v=8Sj5_WITMpA
Some stoner band from California which I didn't like at first, but now I can say their silly sound is one of the reasons why I endured the last few months without falling into the winter blues. I wanna do all the things she does.
The Doolittle album by Pixies has some very quirky and upbeat sounds, too.
http://www.youtube.com/watch?v=2mCoOlUjhlc
The Bambi Molesters I discovered only very recently and they're... kind of really fun. Can't go wrong with surf rock as an antidepressant.
http://www.youtube.com/watch?v=g1C1N8KYhtY&feature=related
Their other songs are a bit better, but that one is pretty upbeat.