I've read over this post twice, but still find it confusing to follow.
Yeah, sorry for the badly put question, I'll try to rephrase.
My goal for classical music is to have a folder structure that includes the year a piece was recorded/performed. My problem is how to do this when a CD have pieces recorded in different years. Right now, I have a tag <original year> in which I write the span for all pieces on the CD/box (e.g. 1942-1952). That way, it ends up as in my image. However, I'd rather put the correct year in every single file, and then find a way in which I could check for the span of years on that CD/box and add something like "lowest year - highest year" when organizing. I'm not good with the functions and was thinking that perhaps $Min/$Max could be used for this?
Regarding "separate albums end to end up in the same folder", as of now, I put a box's name in the <album> and then use <disc subtitle> for the individual CDs. However, if I use different <original year> for the different <disc subtitle>, they will end up in separate folders. Not sure if it helps, but here's my exception:
• <Genre> •\· · $First($IsNull(<Composer>,,$RSplit(<Composer>," ",1))) · ·\· symfonier ·\$First(<Album Artist>) | <Original Year> | <Album> | <Publisher>$If(<Original Year>=<Year (yyyy)>,,$IsNull(<Album Mastering>,," │ "<Year (yyyy)>" "<Album Mastering>))\$IsNull(<Disc Subtitle>,<Set Subtitle>\,<Disc Subtitle>\)<Track#> │ <Title>
Hope this clarifies, and once again, sorry for the initial confusion and thanks for still trying to understand.