Why is it that when we hear a song that we like, we turn up?

A while back, Greg and I were shuffling some songs on our I-Pod when “Kashmir” from Led Zeppelin came on.  I jumped out of my chair, dashed to the volume control and turned it way up, even though I could hear it perfectly well before.

Maybe hearing the song is only the tip of the iceberg, the more senses we involve the better.  We want our ears full, as well as feeling it vibrating in our bellies.  Perhaps this is akin to smelling something delicious just before popping it into the mouth for a fantastical flavor explosion. 

I’m just wondering…