This one’s for all piano teachers! Or really any and all music educators out there.   Here are my must-haves in my piano teaching bag.   Planner   What would I do without my planner?! I use this to keep my schedule organized, but also as a record of what we will be working on in the lesson that day/what we worked on last week. This includes the page number of the lesson book we’re working on! Before I started…