Tilda is so excited when her teacher asks her to run Mash-up Dance classes to practise for the school concert. It’s Tilda’s first REAL teacher job! But there is one thing she isn’t so sure about. Tilda has also been asked to give a speech at the concert. Now Tilda is feeling enthusiascared – that’s right, enthusiastic and scared! What if she messes up her speech? Will the concert be a master mash-up or a master disaster?