Gruntilda's Lair. Wow. I looked it up, and up pops The Teddy Bear's Picnic, written by Henry Hall in 1932. School kids would sing a rude version back in the day. They probably still do, or at least I hope they do.
Gruntilda's Lair was created by Grant Kirkhope, right? I think he has done a great job in bringing out the sinister tones. But the original was not lame either.
Good spot!