Perfectamente imperfecto

Orion Sigerstad is perfect. He is so perfect that he has never used an eraser in his entire life because he has never written anything wrong. He doesn't even know where the principal's office is, because he has never misbehaved. What's more, he plays the flute so perfectly that he is set to become the youngest student at the Conservatory of Exceptional Music. All he has to do is prove it in a concert. But on the day of the concert, Orion wakes up transformed into someone else—someone completely clumsy. Instead of greeting his parents kindly, he shouts at them. He writes "PEE" as the answer to a math assignment and throws a ball at the PE teacher. Worst of all, however, he doesn't play a single correct note on the flute... Orion doesn't understand what is happening to him. Can he fix things in time for the concert—the most important test of his life?