In the Echo Chamber Hoodoo Gurus

As I was out walking
Home alone one night
I saw this man approaching
He wore a coat of white

He said, "You don't know me
But you'll very soon find out"
Then the world was darkness
As a cloth clamped around my mouth

I said, "Where am I?" Oh
"Where am I?" Oh
"I don't know
How can I escape?"

Slowly I recovered
My head was aching bad
I was laying on the carpet
Inside this madman's lab

Then a voice was speaking
From behind a glass-walled booth
It said, "Welcome stranger
We've got serious work to do"

Where am I? Oh
Where am I? Oh
Someone say more
What's his fiendish plan?