Album tags for mopidy mobile

I’m having trouble with “mix tape” style “albums” which contain lots of individual tracks from many albums etc. What are the required tags to make Mopidy-Mobile see these as a single album? At the moment, the tracks all have the correct “album”, “albumartist” and “albumartistsort” tags Also, they share the same “diskid” tag. Most of the other tags are different according to the individual tracks.

I’m using M.A.L.P too and that groups these albums correctly into a single entry but Mopidy-Mobile lists each track as a separate album.

many thanks