Happiest song ever

Or maybe not the happiest one ever, but it still makes me smile, even if I'm not in love: I Choose You by Sara Bareilles. I probably fell in love with the video before the lyrics, but it holds a special place in my heart.

Do you have a song that makes you happy, makes you wanna sing and dance? And what about your day, how was it? Did you accomplish something or earn some achievements?