I'm trying to add this release: http://www.allmusic.com/album/alan-lomax-in-asturias-november-1952-mw0002311477
Actually, there are a lot of releases around that are related to this Alan Lomax guy. I'm trying to get them sorted out in a semi-coherent way. There were a lot of releases under the "Alan Lomax Collection" so I've created a series for that.
This particular release, and most of the Alan Lomax Collection releases, are traditional music from a specific region, recorded by Lomax, mostly in the 50s. In this case especially it's all original recordings by particular people at a particular time and place. It could reasonably be called Various Artists, but I wonder if it would make sense to list Lomax as the album artist, since he's named on the cover and represents the unifying force?