Lyrics:

[La, La, La, La, La, La. Oh hello there. This is your old pal Grover here.
Oh I am so glad you are here. I was just here all by myself you know.
Oh, but that's okay. I can do lots of things when I'm alone.]

What do I do when I'm alone?
Well, sometimes I sing a little song.
La, La, La, La, La, La.
That is the song I sing.

What do I do when I'm alone?
Well, sometimes I do a little dance.
I jump and I hop, hop, hop.
That is my little dance.

And sometimes when I'm all alone,
I pretend that I can fly.
And I touch all the clouds and
I wave to the birdies as they pass by.

But, sometimes when I am all alone,
Well sometimes I feel a little sad.
'Cause there's no one to share my song,
No one to fly with me.

So, sometimes when I am all alone,
I think of how happy I would be
If I wasn't alone and you were here with me.

[You know there are lots of things you can do when you're alone.
Yeah, you can write yourself a little poem. Or throw a ball up against a wall.
Yeah, yeah, lots of things but you know what...
I think that lots of times it is nicer to be with somebody else than all alone by yourself.]

So, sometimes when I am all alone,
I think of how happy I would be
If I wasn't alone and you were here with me.

(And you are here with me, so I am not alone and I am happy.)