Hello,
I usually have some type of background noise on for them, either my radio show I listen to or some music. I do believe that they will react to certain sounds, music, etc. I think mine do like the softer, less head banging type of noise. LOL Too much loud music would likely annoy them. Though, I can't say that I have actually put in the head banging type of music & watched them.
I just know that they seem to be pretty relaxed most of the time when I have something on for them, instrumental (not classical) music, or softer easy listening, etc.
Tracie