Looking at a production music release group, Background Music N. 4, I see that the original editor has not set a secondary type. However, the editor who submitted another release group in that series, Release group “Background Music N. 2” by Arawak - MusicBrainz, has set the secondary type to Soundtrack.
In order to create some consistency, I was going to remove the secondary type from Release group “Background Music N. 2” by Arawak - MusicBrainz. My thought is that, while production music can be used in a soundtrack, it wasn’t created as a soundtrack with a particular performance in mind. I am still somewhat torn, however and would like to know the community’s thoughts before I make any changes.
I guess what I am asking boils down to: Should any production music release groups have the secondary type of soundtrack?
Still, I agree, that production music shouldnt have a “soundtrack” type but rather its own. This, btw, is about not only secondary type, but primary also - while adding a release from digital store you can treat it as a real album, but if this release doesnt have a public version and you are adding it to MB from production music site directly - then its a some kind of “source”, where almost every track has a bunch of alternative versions, which in most cases never released publicly. I suppose this is the same case as for movies with publicly available OSTs/scores and unavailable/bootleg recording sessions, compete scores, etc.