No song is indicative of its genre. If you take any two songs from the same "genre," you cannot use one to judge the other. Then you take those two songs and use them to judge the entire genre? That's prejudice.
I'm not saying they have to like every song I like or dislike every song I like. What I'm saying is they have no right to judge an entire genre based on the two songs that they've heard from it.
EDIT: I have a solution to this problem. We just remove genres from music and all music falls under one genre. That genre is music. Then, people can no longer judge an entire group of music, but only individual songs or artists.
FURTHER EDIT: I've had it up to here with going to a music store and having to check three or four different genres where the artist could be because there are no real genres anymore. They should just put all the music in the store in alphabetical order and scrap the whole genre system.