30 Songs in 30 Days Day 1 - Your Favourite Song

I've been wanting to do this 30 songs challenge thing for a while but stuck on day 1 because I just don't have one favourite song. There are so many songs I love and they're all so differnet it's hard to compare to find one ultimate favourite. My favourite will change depending on the time, what sort of mood I'm in, what I'm doing and so on and so forth. But this might be one of the greatest songs ever. I love dancing to it and it just makes me feel strange in a good way.