I remember it well, it was in the early 70's. i think it was a Tuesday night.
It was a programme that included Derek & Dorothy Elliott plus Dave Burland I believe. Dave will remember it I'm sure.
    Roy attempted to teach the viewers the song "No Sir No", but sung in what he said was "The Lydian Mode" with Dorothy joining him at the last part. I was fascinated by how different the tune sounded. He kept saying "It is the same tune, but sung in the Lydian mode"
Roy also sang The Grinders Hardship.
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Two weeks later Roy was booked at our club The Masons Arms in Rotherham on the Thursday. I had a 1 to 1 session with him for about 40 minutes but the 'modes' were flying over my head. He did a terrific night; it was the first time I had seen him 'live'. We booked him many times after that night.
I am sure i have kept Roys recording somewhere.
m