So all went well with the U.S. radio show. Apparently I was a 'phenomenal' guest, which is the first time I've been called that by anyone sober.
Before the show, I chugged down industrial-sized quantities of Bach Rescue Remedy , which really seemed to help with pre-performance nerves. Because no matter how often you do these things, you still get nervous. Nerves are normal, particularly when you're doing something as downright unnatural as a media interview. Nerves are good (ish). Sometimes. Especially when you can get a hold of them and alchemise them into energy. It's when they get a hold of you that you have to watch out.