What's the song in Gossip Girl?!

at the very first episode, there was a song played during the scene where serena was in a train!? and then she was in grand central station and dan was there as well!. There was a song playing!. At first, the singer was whistling then the chorus goes "we don't care about the (something, I'm not sure)!.!.!."Www@Enter-QA@Com

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