Thanks Phil. I am trying to be brief on this as it has moved too far OT
.I understand what you are saying but it does not address the issue with classical music. it is not a search problem but a display one. Without the composer and/or work appearing in the display one cannot tell which composer is responsible for which track ( essential to identify the music) nor if there is any relationship between tracks ( essential to distinguish works which may consist of numerous tracks).
It is also not only a UPnP issue but one that affects all sources.