http://musicbrainz.org/ws/2/recording/?limit=%19&query=tnum%3A%282%29%20qdur%3A%28117%29%20artist%3A%28prince%20%5C%26%20the%20revolution%29%20track%3A%28take%20me%20with%20u%29%20tracks%3A%289%29%20release%3A%28purple%20rain%29

Releases that have "Various Artists" as the release artist include an artist credit node, but other releases don't. Further, the artist node is incomplete because it doesn't include the sortname. Artist nodes should always include the sortname (Picard expects this).

The solutions are either (1) removing this AC node from VA releases, (2) including the sortname in the VA artist nodes, or (3) adding release AC nodes to all releases. I'm okay with any of these.