MediaMonkey uses freeDB.org for tagging albums and tracks. http://www.freedb.org/freedb_search.php
Here’s what it returned for the groups you listed Amie. If you go to the site above and check for more make sure to use quotation marks around the name of the group or track or however you are searching or it will return everything with any of the words in it.
Lowest of the Low:
The Lowest of the Low / Night of the Living Assholes Details
Lowest Of The Low / Motel 30 Details
The Lowest Of The Low / Shakespeare My Butt Details
Lowest of the Low / nothing short of a bullet Details
The Lowest of the Low / Hallucigenia
The Lowest of the Low / Shakespeare My Butt
Lowest of the Low / City Full of Cowards
Lowest Of The Low / Rare Tracks
The Lowest of the Low / Nothing Short Of A Bullet [Studio Disc]
110 results but some are duplicates
The Guess Who:
156 results but some are duplicats
Crash Test Dummies
93 results but some are duplicates
Chantal Kreviazuk / Leaving On A Jet Plane (CDS)
I actually don’t use MediaMonkey for tagging since most of my 56,000+ tracks are downloaded using “Radio Tracker,” part of the AudialsOne package so they come already tagged off internet radio. What I have tagged are CDs using Exact Audio Copy which does use freeDB.org and I have only ever run across a few CDs it didn’t have.
P.S. I don’t use iTunes so I can’t vouch for MediaMonkey either working or playing nice with it, however it does seem to play just about anything else I’ve thrown at it. It also syncs with my Galaxy S phone.