I didnt realise it was 1974 in which case I wasn't a kid, well maybe a big one. As for the duet, Ok I'm game, not to mention tone deaf. Its not true that all the Welsh can sing.I didn't realize it was a TV series, so I looked it up. It was in 1974 and I was in college so no wonder I didn't know, I didn't watch much TV in those years!
Maybe we could do a duet on the theme tune...