Andrei,
Thanks for replying. What you've stated is right. Sometimes the recording is done in one place, the mixing in another and the mastering in a third. And occasionally the liner notes or musician's site have all that, so I'd like to be able to capture it. It would also be nice if there was a field where you could select or type 'Recording' or 'Mastering' or whatever.
Since studios generally don't move (there are exceptions, like the Rolling Stones Mobile Studio which a bunch of people borrowed), it would also be nice if Orange could fill in default city and country when a studio with the same name was entered at some past time.