Lyrics:

Diamonds are a precious thing.
More precious than silver.
More precious than gold.
But love is a far more precious thing.
At least, that's what I've been told.

And so, well, that's why I'm here.
Because I cannot contain it in my heart any longer.
What once was little is getting bigger and bigger.
And what once was weak is getting stronger and stronger.
A song of joy, a song of joy, a song of joy, a song of joy and love.

I went down to the library and I got me a book by some Italian poet.
And I read it from cover to cover, and in between, and from front to back.
I was only guessing before, but now I know it.
That love is something that you should not keep to yourself.
It's much, much better when you let it out.
And not some teeny-tiny whisper, but in a great big shout.
A song of joy, a song of joy, a song of joy, a song of joy and love.

Well, what do you like best, spring or summer?
I like the springtime best of all.
In the springtime, the birds are singing.
The flowers are growing.
Oh, man, I mean, you got it all.
And that's why I'm here.

And so, well, that's why I'm here.
Because I cannot contain it in my heart any longer.
What once was little is getting bigger and stronger and stronger.
A song of joy, a song of joy, a song of joy, a song of joy and love.