I've been around here for some time and I know that some Mp3tag users keep information about the overall number of tracks of a given album
My question is: why?
If you want to use this piece of information for distinguishing the same album in more than one edition, because for example the same album can have 18 tracks in USA and 20 in Europe then that is not enough- the album can multiple re-editions on both sides of the Atlantic Ocean. [For that one should use the distinguished serial / pressing number, or whatever it is called, that identifies precisely what disc from what album or at least what album it is]
So what is the point of keeping info about overall number of tracks?
And the second issue: what if there is a hidden track? Do you recount the tracks accordingly to the reality and not the official tracklist?