Quarter centuries index for classical music?

[Wolfgang]

Very well made, Stefano. I like your tree presentation.
But to get what you have, this would require another tag to be filled for me. I'm already tagging each track with the composition date. So I would like to derive this kind of index from this date.

(18-02-2023 07:58)stefano_mbp Wrote:  You could use the classical music eras criteria defining it into, for example, Period tag and add Period to indexTags.
This is what I get in this way: