Cleaning out iTunes artist/album separations?

I ripped most of my CDs with iTunes, and for compilations like the Smithsonian’s “American Popular Song”, it introduced what Roon sees as a new album for each singer, so I’ve got dozens of pseudo-albums (one artist per album) stemming from that 5-CD set. Is there some easy way to group them or get rid of them? Or should I just write a Python program to group all “albums” with the same name (hmmm, perhaps except for “Greatest Hits” :-)?