So, here's what I'd like to do...

I'm trying to go through my music library and tag all my music as I listen to it -- right now I'm trying to tag my instrumental tracks with "instrumental" in the grouping and comments field.

thing is though its kind of a pain to have to open file info for each track everytime.

what I'd really like is a way to invoke a command in say Quicksilver (or a keyboard shortcut, or even pulldown a script from the script menu in iTunes) that appends this information for me saving me some time/hassle.

anyone know how it can be done?