Duke Ellington - I've Got the World on a String lyrics

I've got the world on a string I'm sitting on a rainbow Got the string around my finger What a world, what a life, I'm in love I've got a song that I sing I can make the rain go Any time I move my finger Lucky me, can't you see, I'm in love Life's a wonderful thing As long as I hold the string I'd be a silly so-and-so If I should ever let her go