I actually guessed wrong, thinking it was a certain Irving Berlin tune that Kate Smith famously sang, a song that is very similar to this one. I guess I'm backwards tone deaf.
I guessed right within five seconds, but then I started thinking all the balloon and bowl action was meant to illustrate the song in some manner. So I went back on my guess and proceeded to confuse the hell out of myself for another minute.
For some reason YouTube gave me a bunch of Stairway to Heaven videos in the "related" box, so I assumed it was Stairway and barely even listened to it.