They are songs I purchased through I tunes and they show up in my iTunes library. I know because I do a lot of long distance flying (8 plus hours) and often listen to the songs during the flight, so they can't be in the cloud. They were downloaded to my iPad by hooking it up to my Windows desktop and syncing the iPad with my iTunes library through iTunes.
Any way to determine if metadata is missing? Thanks for your help. My tastes are eclectic enough that most of the matching tones are always the same 4 and irrelevant anyway but that is another story.