Forgotten password/different Apple ID
I have inaccessible .m4p iTunes music purchased using an old Apple ID, the password to which I have forgotten. To further complicate things, the ID is an email address that is no longer working, so attempts to change the password (which involve getting an email sent to that address) don't work. I do have iTunes Matching, but have been unsuccessful in trying to add the protected songs to my current library. Appreciate any suggestions as to how I can regain access to the music.
iPhone 12