Same recording with different metadata in different releases

The SoundRecording composite in an ERN message is "Release specific". 

This means that there is the possibility that some of the metadata for a recording might be different between different releases — despite the recoding carrying one identifier. 

One example for this is the genre. The same sound recording may have a genre “Pop” in one release and “Euro Pop” in another. 

Another example is the DisplayArtistName of a collaboration between two artists A and B, which may be “A feat. B” on A’s album but “B with A" on B’s.