All depends on the music and the person who is listening to it. Heavy Metal, yo me, is just noise and someone screaming some words that you understand once in a while. Picture heavy metal as lots of lights flashing and trying to understand someone who is signing super fast as the lights are flashing.
Rap, well....just someone talking with a musical beat with alot of bass behind him. Not into rap either.
Techno, high energy. Lots of sythesized music, and some actual singing. Just hearing it, to me, makes me wanna dance. But, it is not my preferred type of music.
All other music...it all depends what kind of song, who is the artist, etc.