I, and many of the other trumpeters I know, seem to have good days and bad days. On a good day we'll be able to hit all the right notes, get all the runs and sound great. On a bad day though, we'll have huge problems doing all those things and sound really bad. I'm sure you've all been there at some point too. Thing is though, I have some big concerts coming up and I'm scared that I'll have a bad day during one of them - so does anyone know what factors can cause a so called bad day? And any tips for what to do should I have a bad day?