You can train the muscles needed to play a brass instrument! This is great for creating a beautiful embouchure. By blowing into the instrument in the same way as when playing an instrument, a lot of pressure is applied around the mouth. You can develop the muscles you need to play well. Conversely, you will also come to understand which muscles are required to play an instrument. It's easy because you just put it in your mouth, and it doesn't make any noise. However, it is important to note that if you do not use it with sufficient breath pressure, it will be meaningless. This is a particularly good exercise for those who have just started playing brass instruments in junior high school, high school, university, or as working adults, as it helps them develop a beautiful embouchure. Even if you can already play to a certain extent, it's a good exercise to build up your muscles. [Management number 1543892]