-Yeah. -I've seen you perform.

Please go see Tenacious D in concert.

-Thank you. -It's unbelievable.

And you do a -- you do a thing

with a thing called the Sax-A-Boom.

-Yeah, yeah, yeah. -It's a toy, or -- What was it?

-Well, it's like a saxophone, but it's a Sax-A-Boom.

It's a -- It's a different kind of instrument.

A lot of people confuse them. -People confuse them?

-Well, you know, 'cause they look similar.

But a Sax-A-Boom is its own kind of instrument

that takes years to master.

But, yeah, thank you for remembering

about my Sax-A-Boom days.

-Well, I was just wondering, if we happen to have one here...

-What? -...could you maybe just show us

what it's like to -- -You don't have a Sax--

Oh, my God!

[ Cheers and applause ]

-This is a Sax-A-Boom. -Are you kidding me?

-This is a real -- This is a --

You know how hard it was to find a Sax-A-Boom?

Could you show us the -- the magic?

Could you give us a little taste?

-Here it is. Rare as a Stradivarius.

Yes, I will give you a taste.

[ Laughter ]

Are you ready? -Yeah. Wow.

[ Laughter ]

[ Sax-A-Boom plays ]

One, two, three, four.

One, two, three, mother [bleep].

[ Sax-A-Boom plays ]

One, two, three, four!

[ Sax-A-Boom plays ]

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[ The Roots join ]

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-That is how you do it right there, everybody!

That is Jack Black!

Go see "The House with a Clock in Its Walls," opening tomorrow.

More with Jack Black when we come back, everybody.

♪♪