Found this clip on Youtube:

https://www.youtube.com/watch?v=Ew6DS2bXYmk

There's a whole bunch more on her channel.

I'm guessing this was recorded on a quad originally, but holy hell, this tape's well preserved - you generally don't see old videotape with this kind of quality to it.

Am I right that this would have been recorded to a quad machine, or was anyone using helical for broadcast back then?

Tape from this period is always a puzzle to me - no idea how many times it was re-recorded and processed before it got to YouTube. I see some image orthicon halos, but no video noise - so, was it there but all removed in later processing? Hard to say. I see no quad banding whatsoever, but again, my understanding is that by the mid 60's quad tape was getting to near perfection, and the automatics on the top machines did a much better job of playback of old tapes than the original recording machine could.

Thanx for the youtube clip. Wouldnt it be nice experiencing this in analogue as it was then??

Looks like i found my answer:

https://www.youtube.com/watch?v=Q3H2ieIQMVY

Looking to the righthand side, you see 16 or so glitches. It's quad. Also, the playback machine seems to be having trouble with this clip.

I wonder when it was transferred to digital, how many generations and all. It'd be neat if the entire program could be put up, because it's a neat look into how TV must have looked back then...

Remarkable is also the audio, apparently captured with a boom mic. I have not seen recordings of a performing singer done this way before.

And the video looks to me as if pretty heavy noise reduction has been applied to it.