For those tuning in late...
On to the songs...
40. "The More We Get Together" - traditional: "Traditional," but when the single most influential kids music artist of all time starts his very first album off with this song, it's forever owned by Raffi. (Listen to a cheesy government-funded instrumental version here. Shudder. Or another version here. I'm not even gonna try it. Clear out your brains with a 30-second sample of the classic version here.)
39. "Mr. Rabbit" - traditional: "Mr. Rabbit, Mr. Rabbit / You've been in my cabbage patch / Yes, my friend / And I ain't never comin' back / Every little soul must / Shine shine shine." Excuse me? What? That's, like, 3 non-sequiturs of a lyric. And somehow it's still catch and popular. (Sorry, no links. Johnny Keener's got a nice version on Elephants Over The Fence.)
38. "Rainbow Connection" - Kenny Ascher and Paul Williams: This would be a lot higher on the list, but I tell ya, that key change halfway through is just a difficult one to handle. Kermit's version is classic, of course, but almost too banjo-y, if such a thing can be said to exist. I think I actually prefer the Dixie Chicks' version on Mary Had A Little Amp. (Watch Kermit on YouTube.)
37. "My Hair Had a Party Last Night" - Trout Fishing in America: They've had a bunch of good songs ("Alien in my Nose" came close to making this list), but this is the one that's been covered a number of times already. "It started out friendly but there must've been a fight." (Listen to a sample of a live version here.)
36. "Pig on Her Head" - Laurie Berkner: One great thing about Laurie Berkner is that she writes kids songs that parents can actually sing. Admittedly, she's writing for toddlers, so that's on purpose, but we still sing this song with our youngest and occasionally oldest kids. Great imagery. (Imagery illustrated by the Noggin video, which can be accessed on this page.)