I was late to Harmony Director party. I knew what it was. I knew what it did. But I fully underestimated its power as a rehearsal tool. We now own three of them and use them all day, every day.
What a brilliant idea! Bandmate tuner shows students what note they are playing on the music staff. It has been a godsend for our beginning brass students (especially horns!)
The best tuner/metronome app available. It’s pretty much a Harmony Director on your phone/tablet and is a tremendous practice and rehearsal tool for your students.