# The Sine of Pi

*Lyrics by Eric McDowell
Music by Billy Joel
Sung to the tune of “The Longest Time”*

Further than the negatives go on;

Less than every valid epsilon;

That’s where I find you,

You’re the only unsigned value.

My central figure, you’re the Sine of Pi.

You’re the fairest factor I can name;

You treat all real numbers just the same.

You’re the result of

Every product you’re a part of –

You send each number to the Sine of Pi.

While the others try to alter me,

You’re my additive identity.

That disallows you –

You won’t try to change my values.

I’m glad I’m added to the Sine of Pi.

No one noticed you at the start;

The traits of your heart

Are hard to impart.

Now we know the number that you are;

You’ve helped us come this far,

And you’re more than we hoped for.

Cruel divisors posing as my friend

Treat me like some common dividend.

But you won’t try to –

I can’t be divided by you;

There’s no one like you, you’re the Sine of Pi.

If you should subtract yourself from me

The difference you would leave

Would equal only me.

Should I take myself away from you,

That act would turn me into

My additive inverse.

When I write one-hundred-million-two

I use seven images of you.

Your lovely faces,

They all hold my empty places;

I fill those spaces with the Sine of Pi.