Lou and Peter Berryman (Of "A Chat With Your Mother/The "F" Word" fame) do an interesting twist on their number "Double Yodel". Where normally a male yodeller (yodellist?) would slide into falsetto for the soprano parts of a yodel, the Berrymans trade off, seamlessly, with Peter doing the low parts and Lou doing the high - it's eerie, because it COULD be just one person...Either their recording engineer is a real whiz at splicing, or their timing is impeccable; having seen them live a few times, I'm willing to believe it's not just a studio trick!