I typically just tag them by the composer's name and not the orchestra who played it, although that doesn't make much sense. It's like tagging a cover song by the original artist's name even though that version is made by someone else.
Yeah the problem is that too much info is required to specify each track uniquely. Especially when you have different ppl who perform the same piece, and sometimes one performer does multiple recordings of the same track, etc. grrrr >.<
