Have found [strikethrough]Disc[/s] edit:CDDB IDs for https://musicbrainz.org/release-group/73cc65af-b17c-45c1-84e2-4fe32622c8f7athttp://www.freedb.org/freedb/classical/52126217&http://www.freedb.org/freedb/classical/b1116e1d
What to do with them?Can't show that they are for either of the two existing releases as no barcode/ASIN. Nothing in hand.
Personally, I don’t trust freedb’s crappy data for one bit, so I wouldn’t use it without other evidence that the data is correct.
FreeDB's CDDB IDs are not Disc IDs. Disc IDs are made using more of the data in the CD TOC than what's used for the CDDB IDs, so you can't map CDDB IDs to Disc IDs.