I just did an interview on 4ZZZ community radio here in Brisbane about our drum and dance classes. This was totally unscripted and unrehearsed, and there wasn't even any briefing with the interviewer beforehand. Given that, I think it turned out well. Despite the short amount of time and that everything was off the cuff, I tried to inject at least a little bit of cultural background without letting the whole thing degenerate into a lecture.
Here is a copy, if you want to have a listen. (Two nice djembe tracks are part of the interview, so it isn't all just talk