The Moosic French Horn Visualizer is essential to the playing of all hornists either professional or amateur. Great for warming up or as a strength builder, it provides the player with ability to see the buzz and assess the embouchure. It is also a great way to warm down and avoid morning after embouchure fatigue. Already used by some of the greatest players in the world, it can help raise you to the next level. You bid on ONLY one visualizer.