Music... Again...

I think about music a lot, if you hadn't noticed. Today I was thinking about the degree to which people, at least people I know, use music tastes as an indicator of personality, or compatibility. For example, when two people meet and one asks the other what kind of music they listen to, that person forms opinions about the other based on their response. If they like the same music, then often people are surprised and take that to mean they are compatible. If they like different music, then opinions are formed, and that could be used later by either as a reason they are incompatible. Is music really a good measure of personality though? Certainly people have very strong opinions about music, but take for example a common occurance, where the first time a person hears a song they don't like it, but after repeated exposure for whatever reason they end up loving that song. The inverse can also happen, that the first time someone hears a song they love it, and after a while they never want to hear it again. Also, it might happen that a person lists, for example, rock as their favorite type of music, but they haven't been exposed to very many other kinds of music because that is what their family and friends like. These are just random thoughts on my mind.