Provide a variable for the date of recording of a track. This needs to be derived from relationships. The date of recording is supposed to be set for:

• recording - place relationships of type "recorded at"
• recording - event relationships of type "recorded at"
• recording - area relationships of type "recorded in"
• recording - workrelationships of type "performance"

See https://community.metabrainz.org/t/original-release-date-community-opinion-on-how-to-handle-the-originaldate-tag-first-release-date-of-release-group-and-or-recording/512588/3

Questions:

• What to do when there are multiple relationships, but they disagree? Use the earliest date?
• Is there any other way to store the recording date?