Thanks PFR... you write:

> Tony - you know hardcore fans would want both concerts..
> .. even if casual listeners couldn't detect a single note of > difference...

Correct - but there are varying levels of "hardcore" and "fans"...

I think my dilemma described here arises because I am trying to do 2 functions with a single tool (youtube) which is better for the second than the first, in practice at least. The first is to archive materials for posterity (for which I too think both concerts should be preserved) and the second is to make material available (and sufficiently interesting) to potential listeners/viewers, which may require judicious subsetting, editing and splicing, or simply avoiding posting "almost" the same material twice to avoid boredom/overkill.

Meanwhile in this case I have decided to hedge my bets for the moment, as follows - (1) digitise both concerts at best quality for my own holdings before the tape deteriorates any further; and (2) send a (slightly reduced quality, suitable for easier emailing and youtube) copy of both concerts to the original artist, who has expressed the desire to do the upload themselves to their own youtube channel, and let them decide which is the better one for public viewing (in other words, outsource the "hard" decision/s). Obviously this does not quite fulfil the "permanent archive" function, but also does not close off any future options, at least so long as COVID (or a passing truck) does not carry me off...

Cheers - Tony