Guess Case currently recognises that (dance mix) and (club mix) should both be all lower-case. However, on the same release there could be (Chillout mix) and (Ambient mix) versions, which it will fail to make all lower-case, thus making the editor believe that it should perhaps not be all lower-case as per the other tracks. It would be helpful to include some additional phrases into the list of common non-titles, such as "chillout" and "ambient".