If I have multiple artists under the Artist field, in the track listing I see, for example, "Sir Charles Mackerras\Scottish Chamber Orchestra" (using the "//" delimiter"). But when I enter the same text under Album Artist, I see only "Sir Charles Mackerras" in the track listing.
However, if I actually view the tags in something like foobar2000 I see the Album Artist tag as expected: "Sir Charles Mackerras; Scottish Chamber Orchestra" (where the delimiter has been replaced by a "proper" text separator).
I would have expected multiple artists to be displayed in the same way under both the Artist and Album Artist fields. Is there a reason for this difference?