Which song are you going with?

You have been invited to a mysterious tournament of skill in Singapore. You have mad skills, so you go. The challenge begins with a maze that looks like its about 25 miles long. Your goal is to make it to the center, where you will be entered into the tournament: head to head competition to the death. With the help of a leprachaun named Alfredo you overcome many obstacles and make it to the center of the maze. You are immediately entered into the tournament. You vanquish all of your foes along side Alfredo, an abominable snowman, and a large rat. The final round has arrived, and you now face the tournament master, who happens to be David Bowie. David Bowie tried to kill you once, but instead killed your twin brother, a famous concert pianist. You want revenge and decide to face him alone because "that's how it's done". Bowie is armed with a song. And you know its a good one because, come on, he's frickin' David Bowie. You must defeat him with a song of your own. What song do you choose to eliminate the Thin White Duke?