I have tagged my music files (mp3) with the recording date and the release date in this format:
This format allows them to be sorted chronologically. (If I don't know the month I use '13' and if I don't know the day I use '40')
Since I want my tags to be saved as part of the mp3 file I don't use MM custom tags which are only saved to database.
So I use the 'Lyricist' field for recording date and 'Conductor' field for release date.
What alternate fields can I use since using Lyricist and Conductor overlap other legitimate uses?