Genre Standards & Cleaning

[AnalogKid]

Hi, the genre tag in my collection is something I'd like to use more, but its quality is inconsistent and often wrong.

I am looking for:

1. Standardized Genre Values: As an alternative to my coming up with my own standardized genre values, I am looking for one that might exist somewhere to use. Something more sophisticated than "Rock", "Jazz", etc. For example, "Rock - Punk", "Jazz - Bebop", etc. I realize there is an enormous amount of subjectivity, but sites like AllMusic have done this....

2. Ability to "automagically" retag all my music based on an Artists' applicable genre (I realize that some artists will switch back and forth, but I'm willing to be flexible

Any ideas or thoughts are most appreciated!!

John