Whether teaching or practicing, there is a to-do list that has to be covered. To-do lists can get really long, so I try to keep it strictly "do this" rather than "don't do that."
Around 1000 AD, Pope Gregory needed a way to transfer music from Rome to France. Guido of Arezzo, a theoretician, came up with the modern system of music notation.
Brass players share a variety of concerns about students and players that are encouraged (directed? coerced?) onto instruments they don't want to play.
