I just know Mia is going to hate me for this in about 10 years, but for now, try not to die laughing.
And in case you're interested, here are the lyrics:
If we believe in our heart, and we need to start
If the world can believe, the world can believe
The place we've never been
If we work together we're getting this done
Helping the planet work
We need to get it finished
Help me to survive our planet--We'll get it done
It's not ours, we need to get it done
Help it, if you survive the rest of your life
And then I had to stop filming and go laugh my head off in the other room.