Newbie question on tagging a multidisc album

[paulgj]

Hello, I currently have the album A Multitude of Angels box set by Keith Jarrett which contains four separate discs each representing a different Italian live concert.
Disc 1- TEATRO COMUNALE, MODENA
Disc 2- TEATRO COMUNALE, FERRARA
Disc 3- TEATRO REGIO, TORINO
Disc 4- TEATRO CARLO FELICE, GENOVA

I'm wondering what is the optimal way to tag these files?

Each disc will be ripped into its own subfolder under the main album folder (which also contains the artwork)

As I understand so far I need the ALBUM tag to be A Multitude of Angels for every file and for the files in each disc folder a DISCSUBTITLE tag containing the values above.

Is it also necessary to have the DISCNUMBER and TOTALDISCS tag?

Thanks for any advice.