I have no idea what they talking about.

- Oh, Zac wanted to show you how he learned how to play guitar.

I taught him how to play guitar.

- I got my first guitar lesson from Taylor.

- He's really good at it for like, one lesson.

It's really great.

- One lesson?

- He had like, one lesson and he's good at it.

And we learned-- I taught him how to play Pumped Up Kicks

by Foster the People.

- Really?

- Yes.

- All right, are you going to play guitar?

- Uh, yeah.

We can play a little guitar.

- There are two guitars coming out.

[AUDIENCE CHEERING]

- Do you have two picks?

- Yeah, there's a pick right here.

- Oh, there they are.

- So, yeah, you can use my guitar,

I'll use your cool guitar.

- You have your own picks, Taylor.

- Sweet.

I know, that's all I carry around.

- Taylor Swift picks!

- Yeah, that has my face on it, which is a little awkward.

But yeah, show her the chords that you know.

- OK, let's see, what's the first one again?

- E minor.

There, and there.

- All right, here we go.

- It sounds so good!

[AUDIENCE LAUGHTER]

- G, G.

- Only a girlfriend would react that quickly like that.

- Then to D, D, D.

- D, D, D.

- Then A major.

There it is.

All right.

So you go like,

[MUSIC - FOSTER THE PEOPLE, \"PUMPED UP KICKS\"]

- Yeah.

- Yeah, that sounds great.

(BOTH SINGING) All the other kids with the pumped up kicks,

better run, better run, outrun my gun.

All the other kids with the pumped

up kicks, you better run, better run, faster than my bullet.

- (SPEAKING) Could we change up the lyrics?

- If you want to.

- All right.

Let's see what I can come up with.

All right, ready?

- Yeah.

(SINGING) Ellen works a long day.

Giving weird interviews in a slick, cool sweater.

And it gets kind of weird, yeah, callin' us out,

like we're boyfriend and girlfriend.

But it's not 'cause we're just sitting here,

and we got cat videos and dance on Betty White and stuff.

And it's always gonna be weird--

- Is this just about being weird?

- 'Cause this song is all about Ellen and Swift, yeah.

Every single time I come on this show,

it's really weird, really weird all because of Ellen.

Every single time I come on this show,

it's really weird, really weird, always end up dancing.

I've been on this show eight times now,

and I still remember Ellen hiding

in the bathroom with a hidden camera,

and she scared me so bad.

And I fell and I could have died.

She'd always asks me who I'm dating

every time I'm on the show.

And I don't even know why, but it

gets 5 million hits on YouTube.

'Cause every single time I come on this show,

it's really weird, really weird, all because of Ellen.

Every single time I come on this show it's really weird,

really weird, always end up dancin'.

- Wow, that was amazing!

[AUDIENCE CHEERING]

- I love it!

All right, we'll be right back!