For tracks with titles like “Song (prod. foo, bar)” it would be helpful to have a guess producer button on the relationship editor that would work similar to the guess artist button in the release editor. It should parse the producer section and fill out a producer for each item it sees there, saving the editor a step in filling out the producers on a release.

After this is used, the editor can then go and remove the (prod. ) section from the tracks/recordings.