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Hmmm... that's a tough one. Does it have to be something that was released in 2012 or do you just mean something I personally heard for the first time this year?
Nowhere in particular. I just tend to download images I like whenever I stumble across them online so I have a little archive of inspirational material for my design work. The avatar I have right now, for example, has been sitting on my hard drive for a year or two. I can't even remember where it came from.