User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-25520558-20141011225849/@comment-4212769-20141012102633

I kinda agree with Mckrongs here but I think the music change goes back to the target camera.

When you don't paint Chameleos in previous games you don't know in which direction it flies or in which area it goes. Even when you are in the same area you don't know if it's there until you find it. To not give away its place the music doesn't play unless in Rage Mode.

The target camera eliminates these worries as you can see on the target camera if you are in the same area or not. So the hide and seek game is more or less easier than before. And because you know in which area it is when you're in the same there's no need to mute the music now.