I'm looking for a small little jingle that we can play in the beginning of almost every episode. I'm looking for it in three different ways. All of them will be the same jingle, but different in a way.

The first one will be happy and cheery.

The second will be happy, but in a way its losing it cheery feeling. More slow and melancholy.

Imagine the world was coming to an end, that's what the jingle should somehow sound like for the third one.