Nails' music sounds like a massive nightmare machine, but, on this day, Reznor woke up with his voice small and croaky.
As a humidifier gently chugged away in the corner, the rock star smiled faintly and asked, "How old am I again?"
The answer is 43, but Reznor, who clawed through some dark years of drug addiction, is a picture of vitality these days with his brawny shoulders and clear-eyed confidence.
He is also serious and candid.
Asked about the time when the backstage scene at a Nails show would have been less seance and more human sacrifice, Reznor squinted down at his palms like a far-sighted fortune-teller.
"I got so bad that I couldn't even write down songs that were caught in my head," he said.
"I finally pulled out of it. Then it was great to discover that I hadn't killed myself and my liver still worked and eventually my brain started functioning again, and then [I] was enjoying the process again."
That process is, in simple terms, caging up the songs that swim through his stormy and considerable imagination.
Reznor is one of the acclaimed creative figures of his generation in rock, a showman who occupies a territory somewhere between the digital throb of the dance club and the thunderous amps of arena rock.
The first week in May, Reznor typed the words, "This one's on me," and posted the message on his website, NIN.com, along with an entire new album's worth of raw, twitchy music titled The Slip.
There was no advance notice given, no advertising or anything that remotely resembled a conventional record-label approach.
More than 1 million fans downloaded The Slip by the end of the month.
It was the second Nine Inch Nails release in two months.
Reznor posted the 36-track Ghosts I-IV, an unsettling instrumental collection, in similar fashion earlier in the year.
Nine Inch Nails - the name Reznor records under; it's more of a brandname for him than a traditional band - finished off a contractual commitment to Interscope Records last year, and Reznor walked away and found the fear of a liberated man.
"There was a moment of rejoicing, but at the same time it was also quickly followed by panic, because there is nothing real clear or right to do today," Reznor said.
Reznor's "right thing" appears to be relentless work.
In addition to those two albums released this year, he has been in discussion with HBO to pitch his idea of writing a two-year series called Year Zero, which would be based on the intricate science-fiction tale that he created for a 2007 album of the same name.
It also came alive for fans as an alternative reality game on the internet.
If the television show moves forward as Reznor expects, he will add new chapters to Year Zero through another album, another game and a concert tour.
Michael Trent Reznor was born in leafy central Pennsylvania in a little town called Mercer.
His dad had the same first name, so the son went by his middle name.
The youngster loved music and computers and, in the early 1980s, he was part of a generation that began to truly meld the two for its own pop-culture pursuits.
Reznor found his way to Cleveland, where he worked as an assistant engineer and the janitor at Right Track, a recording studio.
He'd heard how Prince created entire soundscapes on his own by playing each instrument and layering them over one another in the studio.
He set out to do the same - the result was 1989's Pretty Hate Machine, written, arranged and performed by Reznor.
During the tour for the 1994 album, The Downward Spiral, Reznor slipped into a destructive cycle of addiction.
"I was ill-equipped for social situations and found that having a few drinks made it easier. Then I found out I liked cocaine, too. And try living in New Orleans, where the bars don't close.
"You come home in the morning and you always see some guy jogging. That's the worst when you're stumbling in and the sun is coming up - the sound of the birds in the morning."
It's become a common error in articles about Reznor to report that he was a heroin user - maybe it's his lyrics about jabbing needles - but he hasn't asked for corrections.
"That's kind of a sad conversation to have; `I'm not a junkie; I'm a coke head'."
- Geoff Boucher
