I have a number of cds with collaborative artists, but they do not consistently sort. The problem is more widespread but I'll use two Chet Baker cds as an example.

1. Chet Baker & Lee Konitz "In Concert"
2. Chet Baker & Russ Freeman "Chet Baker Quartet with Russ Freeman"

There are other Chet Baker, Russ Freeman and Lee Konitz cds in the collection without collaborators.

When I sort by Artist (Sort Name) 1 sorts correctly as Baker, Chet & Lee Konitz and is ordered right after the Baker, Chet cds without a collaborator, but 2 sorts as Chet Baker & Russ Freeman and appears after Cherry, Don.

About half of my collaborative cds sort like 1 and half like 2. Why?