There I was, calmly walking to work in my usual Monday morning daze when I felt something strange on my face. I raised a hand up, tentatively touching the affected area.
After some probing, I was surprised to find a smile there.
As I continued to walk, I could not fathom where it had appeared from, until I realised that there was some happiness leaking into my ears.
This song was that happiness. (Starts about 1 minute in.)