4186 is a booklet that--here comes the hyperbole!--will change education.Except it is not hyperbole. We have the stats to prove it.Take a look at this video before you purchase the book:https://youtu.be/mRho1JsYQXc?feature=sharedThen you'll get it.You see, learning music is more than just playing the instrument.It's also:1. how you approach practice2. learning how to stay present3. practicing how to manage anxiety and nervousness and stage fright4. figuring out how your True voice can come throu