The ReferenceTitle of all SoundRecording elements must, in ERN-3, represents the track title and not the title of the album which contains the track.
Likewise, in Track Releases (i.e. where the ReleaseType is TrackRelease), the ReferenceTitle represents the track title and not the title of the album which contains the track.
The tag for the ReferenceTitle has been removed from ERN-4.