First of all, not a huge fan of the song right off the bat. Let's dance is so much better.
Anyway, this song is has been downrated to hell and I'm adding to it saying, this is one of the most mundane charts in the game.
Holy hell, is it boring. You play standard two note guitar chords throughout the song and it's nothing but repetitive patterns upon repetitive patterns. It offers no challenge, no variety, and no redeeming qualities that make me want to play the song again. Two dots? That's an overstatement.
Avoid the song for it's guitar, unless you REALLY need your Bowie fix.