Please state Yes or No and your reasoning because I can't decide if it's bad or not. I haven't tried it but I think it would relax the rider (depending on the music) which would relax the horse. I wouldn't do this with an untrained horse of coarse but for just hitting the trails. But I can also see how it would be bad, you couldn't hear something like a truck if you ride near a road, barking dog running behind you. But if you kept the music low you would be able to also hear these things so I don't know. What do you think? Am I completely nuts?