DESCRIPTION:
Here it is, the (assumed) main theme from Super Mario Odyssey! They played the full, clean version after the Treehouse segment, but the audio was pretty bad (too much bass, etc) so I cleaned it up as best I could in Vegas and here we are.

Download it here: https://mega.nz/#!2pF3AQ7b!Epp7HnjeEH7sa8hmPzeDNIqkKSaoP3kKLay84vyKcKg

And here's the lyrics, part of the work from the comments, and others from my own ear:

Here we go, off the rails,
Don't you know it's time to raise our sails?
It's freedom like you never knew!

Don't need bags, or a pass,
Say the word I'll be there in a flash!
You could say my hat is off to you!

Oh, we can zoom all the way to the moon,
From this great wide wacky world!
Jump with me, grab coins with me,
Oh yeah!

It's time to jump up in the air!
Jump up, don't be scared!
Just jump up and your cares will soar away!

And if the dark clouds start to swirl,
Don't fear, don't shed a tear 'cuz,
I'll be your One-Up Girl!

So let's all jump up super high!
High up in the sky!
There's no power-up like dancing!

You know that you're my Super Star,
No one else can take me this far!
I'm flipping the switch,
Get ready for this,
Oh, let's do The Odyssey!

Odyssey, yes see (x7)
Odyssey, Odyssey!

Spin the wheel, take a chance,
Every journey starts a new romance,
A new world's calling out to you!

Take a turn, off the path,
Find a new addition to the cast,
You know that any captain needs a crew!

Take it in stride, as you move side-to-side,
They're just different points of view!
Jump with me, grab coins with me,
Oh yeah!

Come on and jump up in the air!
Jump without a care!
Jump up 'cuz you know that I'll be there!

And if you find you're short on joy,
Don't fret, just don't forget that,
You're still our One-Up Boy!

So go on, straighten out your cap,
Let your toes begin to tap,
This rhythm is a Power Shroom!

Don't forget, you're the Super Star,
No one else could make it this far!
Put a comb through that 'stache,
Now you've got panache!
Oh, oh, let's do The Odyssey!

It's time to jump up in the air!
Jump up, don't be scared!
Just jump up and your cares will soar away!

And if the dark clouds start to swirl,
Don't fear, don't shed a tear 'cuz,
I'll be your One-Up Girl!

Now listen all you boys and girls,
All around the world,
Don't be afraid to get up and move!

You know that we're all Super Stars,
We're the ones who made it this far!
Put a smile on that face,
There's no time to waste,
Oh, let's do The Odyssey!