I'm glad I bought the license. The reference file I used was in the Rock folder. It had 1990-2015 in the title. Admittedly, I didn't audition many reference files, so I'm sure there are more suitable ones for my music. I like how you can create your own. I made one from a Soundgarden song I really like the sound of, and used it on one of mine. Very cool program. There are so many things you can do with AAMS. I haven't even scratched the surface!