FWIW, ExifTool documents the plID box as playlist ID. A classic album is just a special kind of playlist apparently.
This ID can be used with the Apple Music API:
PS: This that is probably a duplicate of Modify iTunes Album ID
FWIW, ExifTool documents the plID box as playlist ID. A classic album is just a special kind of playlist apparently.
This ID can be used with the Apple Music API:
PS: This that is probably a duplicate of Modify iTunes Album ID