Morning Mirdle,
I got your PM, and you know, without it, I would never have looked in here as classical music is a minefield for me and from previous threads, I get the impression it's a bit of a 'square peg in a round hole' kind of scenario. Now, when it comes to using expressions to key off 'how many of x is attributed to y' the stock reply was always, sorry, can't be done....
Although I'm starting to wonder about the Save() function.
That's the one. I think. I do not have a lot of experience with global variables so am not sure of their limitations. With some quick messing around, trial and error and forum searching, I got as far as an album count per artist that only worked when the list was filtered by artist, otherwise, it returned the number of albums in the full list which is not quite there. mark_h and MrC are names that spring to mind when anyone mentions global variables...
in the meantime, I'll give some more thought...