Lyrics:

[Alvin plays his harmonica]

[Dave, speaking]
Alvin, put that harmonica down.

[Alvin, speaking]
Why?

[Dave, speaking]
Because we're gonna sing, that's why!

[Alvin, speaking]
Not again!

[Dave, speaking]
Nevermind.
Now look fellas, this is a pretty song
So let's try not to goof it up.
Are you ready, Simon?

[Simon, speaking]
Sure, let's go!

[Dave, speaking]
All set, Theodore?

[Theodore, speaking]
Hot dog, you bet!

[Dave, speaking]
Are you ready, Alvin?

[Alvin plays his harmonica]

[Dave, speaking]
Ready, Alvin?

[Alvin keeps playing]

[Dave, shouting]
ALVIN!

[Alvin, speaking]
Aw, nuts!

[Chipmunks]
We sure like girls,
All kind of girls.
From Annie to Veronica!
We like 'em small or fat or tall...

[Alvin]
I wanna play my harmonica!

[Dave, speaking]
Now cut that out!

[Chipmunks]
And if we want to get a kiss,
We take them fruit or popcorn,
Because they always fall in love...

[Alvin]
When I play my harmoni-corn!

[Dave, shouting]
Alvin!

[Instrumental Interlude]

[Alvin plays his harmonica]

[Dave, speaking]
Will you put that thing down and sing?

[Alvin, shouting]
OK!

[Chipmunks]
We sure like girls,
All kind of girls,
From Annie to Veronica.
We like 'em small or fat or tall...

[Alvin]
I'm gonna play my harmonica!

[Dave, speaking]
All right, Alvin.
Make a fool of yourself.
Play the harmonica.

[Alvin plays few bars of harmonica music, orchestra joining in]

[Simon and Theodore]
Cha-cha-cha!

[Dave, speaking]
Now wait a minute, you guys!
Alvin, you're goofing it all up!
This was a pretty song,
It's not supposed to be a...

[Simon and Theodore]
Cha-cha-cha!

[Alvin continues to play]

[Simon and Theodore continue with 'cha-cha-cha' while Dave speaks]

[Dave, speaking; getting increasingly irritated]
Now look what you did!
You got them all cha-chaing and singing and wrecking the song!
Theodore... Simon... orchestra, will you cut that out?!
Alvin, put that harmonica down! Alvin! AAAAAALVIN!