I ordered two of these for me and the other drum major at my school and gahh-lee do they suck. If you put too much air into them the sound just cuts off. I ended up switching to a walmart whistle mid season after giving up on this one.It only plays the way you want it to if you really focus and get just the right amount of air through it, then it's loud and piercing and lovely, but I can't get it to do that 100% of the time, so yeah.. not for marching band.