Well, I certainly don't think I'd have trouble believing that you listened to more entropic music than me! When Ian and I were discussing lossless audio compression the other week, he said something like "the state of the art is about a factor of 2 compression on most music, but obviously that gets worse if it's Mobbsy music" and I nodded because I knew exactly what he meant by that :-)

That said, your results sound pretty extreme even by that measure, particularly given the (supposed) extra quality-per-bitrate of Ogg over MP3...

I've actually got Odd Fellows Rest myself; I'll have to give it a more critical listen and some more rigorous testing once I start re-doing my MP3 collection.