ETI vs. Disambiguation for channels (5.1, 4.1, etc.)

[chaban]

Multi-channel recordings and disambiguation

While submitting releases with quad or 5.1 tracks, I keep running into the same problem: Should the channel information be included in the track title, like appending “(5.1)”, or should this go into the recording disambiguation field? There is no common practice at this time and arguments can be found for both approaches. a) It certainly looks cleaner to have only recordings of the same title and add channel information to the recording disambiguation field. b) There are releases which ONLY …