old DVD would be OG 2.0.

Immortal Edition is 5.1 in the UK we don’t get the OG 2.0 mix on that disc.

Blu Ray is missing “This is the quickening!” Jumping off the cliff as it is still the 5.1 mix that missed a few bits of audio. Not sure about the 4k remaster Blu ray?

American audio differences “I want to go home” and New york new york song I have never heard them only ever read about them. There could be more?

The 5.1 mix adds the whooshing sounds when immortals are near one another this was a revision that came with the immortal edition.