This is what the Veggie Tales (and any other humor-driven cartoon) esteem to be. Hilarious, with intelligent lyrics and high quality music.
Don't get me wrong, Larry the Cucumber and Bob the Tomato are top-notch, but the Simpsons are a notch higher. With "See My Vest," "It Was a Very Good Beer," and "Who Needs the Kwik-E-Mart?" you'll laugh with that silly, gut-busting laugh you enjoyed as a little kid.
Cameos by Tony Bennet are surprising. He's a bit classier than Homer, but they pull it off.
My favorite Homer line, "But I wanted a peanut." My favorite Bart line, "Oohm, that's good squishy." Hear both in context.
Themes/credits galore are here, with homages to every known pop TV show in the last 15 years. Their musicians did an amazing job melding "Hill Street Blues" with the closing Simpsons credits. It sounds as if it were meant to be.
If you are considering buying this as a novelty, go for it. After a few infectious listen-tos, you'll have given a novelty that will be funny even after the gag.
I fully recommend "Songs In The Key Of Springfield." While you are at it, check out "Silly Songs With Larry."