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Time Out's 50 best London songs (voting)
http://www.timeout.com/londonsongs
Sorry to plug something non-DiS on here but I don't work for them or anything, I just thought it might be nice to have a few decent songs on there when they put out their list. Voting closes on the 10th.
There's no point typing in Micropolitan by Jet Johnson or anything else obscure but something slightly more popular yet still not just the Kinks, Libertines etc might have a chance if we try.