I don't see the need for music - there is a school that seem to think that podcasts are mini radio broadcasts, but you can also see them as verbal news. e.g. Radio 4 makes some shows available as Podcasts (e.g. In Our Time). Not that you can't or shouldn't have music, it's your 'cast, but I don't see that you have to have music if all you are doing is talking about something. Some more comments - The mike sounded OK to me, or at least your voice was clear and I couldn't hear noise. You were sounded a little stilted at times, but that's probably just the nervousness and will improve as you get used to it. Try not to talk too quickly, there were a couple of occasions that some of the words ran into each other and I got lost. Overall pretty good. And although I think the text blog will remain the major interest for me, it is interesting to have the alternative aspect that the podcast gives.