One of the highlights of Sandra Boynton's Frog Trouble is the tender ballad "When Pigs Fly," sung by Ryan Adams. It is earnest and not at all as humorous as you'd expect a Boynton take on that familiar cliche. It's quite beautiful.
Boynton directed and storyboarded the animated video for the song. There's a tad more humor in the video, but there is also, dare I say it, more tenderness in this recounting of some adventures of parent and child.
Ryan Adams - "When Pigs Fly" [YouTube]