I can't be sure, but I think what you're talking about are actually spools of thread.

My theory on music: Any music that pleases someone is good music. Just because I don't like it doesn't make it bad music, and just because someone likes something I don't (or doesn't like something I do) doesn't mean they have bad taste in music. Music shouldn't have value judgments placed upon it. This doesn't mean people can't have opinions or tastes, but those things shouldn't be used to categorize music or the people who listen to it.

/soapbox =D