songs about happiness

[lidia]

I remember two happy songs, but I don't remember the title:

- One of them is from REM: shiny happy people...
- The other one, maybe is called 'the happy song' (let's go, let's go by, come with me and sing... the happy song...).

Somebody knows these songs?

Another song is: Don't worry, be HAPPY!!!

[Miquel Marzal]

HAPPY BIRTHDAY TO YOUUU, HAPPY BIRTHDAY TO YOUUU, HAPYBIRTHDAY, HAPPY BIRTHDAY, HAPPY BIRTHDAY TO YOU....

My bad memory doesn't allow me to sing many songs completely, but at least, I remember this one... :-D