What is the name of the song in America's got talent?!

What is the name of the song in America's got talent?

The song that goes "cause i want it all". and who sings it.

O-Town - All or Nothing

I know when he's been on your mind
That distant look is in your eyes
I thought with time you'd realize it's over, over
It's not the way I choose to live
And something somewhere's gotta give
A share in this relationship gets older, older

You know I'd fight for you but how could I fight somone who isn't even there
I've had the rest of you now I want the best of you I don't care if that's not fair

Cause I want it all
Or nothing at all
There's nowhere left to fall
When you reach the bottom it's now or never
Is it all
Or are we just friends
Is this how it ends
With a simple telephone call
You leave me here with nothing at all

There are time it seems to me
I'm sharing you with memories
I feel it in my heart but I don't show it , show it
Then there's times you look at me
As thought I'm all that you could see
Those times I don't belive it's right I know it, know it

Don't make me promises baby you never did know how to keep them well
I had the rest of you now I want the best of you it's time to show and tell

Cause I want it all
Or nothing at all
There's nowhere left to fall
When you reach the bottom it's now or never
Is it all
Or are we just friends
Is this how it ends
With a simple telephone call
You leave me here with nothing...

Cause you and I
Could lose it all if you've got no more room
No room inside for me in your life

Cause I want it all
Or nothing at all
There's nowhere left to fall
It's now or never

Is it all
Or nothing at all
There's nowhere left to fall
When you reach the bottom it's now or never
Is it all
Or are we just friends
Is this how it ends
With a simple telephone call
You leave me here with nothing at all
(Repeat 2x)