Really, Really Deep In The Groove

I've tried many times, unsuccessfully I now realize, to visualize what's going on in a record groove.  I've seen pictures of lathes and read about masters being cut and so on, but somehow what I imagined never looked much like this.  These photos should only encourage people who like to talk about vinyl being more "organic" and less "sterile" than digital music.

[via 33-1/3]