Maestro Barenboim gives Max a copy of the original score of Mozart's Turkish March. On the basis of Mozart's handwritten notes, it is wonderfully easy to understand that the march must have sounded very different back then than it does today. Happy, Max wants to take the sheet music home to practise the piece. But Maurice challenges the T-Rex crew to a football match to prove that the Ninjas' style is vastly superior to that of the T-Rex. Then Max discovers that his backpack has been switched.