Howdy Bob. I stand corrected. It was Rolf Harris doing the Nick O'Tine & Al K. Hol song. But it was definitely Ol' Slim doing the other two. I remember him yodeling at the end of Muster On The Golden Plain, too. It was a really nice song, and I haven't heard it since. This is over 40 years ago, and the video was just like the modern MTV or country music videos. Nothing new under the sun, eh? Ol' Slim was a pioneer in that field as well.