On "Through The Fire And Flames", before you use Star Power, pause Game Play. Hold Back, and resume game play. By doing this, you will not miss as many notes if you are going for a "Five Star" rank.

In the Through The Fire And Flames introduction, before you start wrap a rubber band around Green. By doing this, you will not have to worry about holding Green; it does it for you. Make sure you press the other buttons quickly so that Green can register. If you hold the buttons as you do the hammer-ons, Green will not register, and you will fail.