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Studio 4, somewhere in the middle of West Hollywood, California, and things are getting somewhat fraught. Heidi Klum - supermodel, Victoria's Secret mannequin and buxom blonde extraordinaire - is all ready to go.
The hair is tousled, the famous body - which shows no sign, by the way, of having popped out three kids in the past four years - is swathed in a fetching white minidress and Ms Klum is clearly itching to get the shoot started.
When nothing happens for the next five minutes, Heidi, railing at the woeful lack of efficiency, declares: "This is not very German - come on!" only to locate the source of the hold-up as none other than her own husband, the singer Seal, standing at the opposite end of the studio looking somewhat glum.
He has just taken delivery of a rough cut of the video for Amazing - the first release from his much-anticipated new album, System - and one can only feel grateful not to be on the receiving end of Mr Seal Henry Samuel's controlled displeasure.
"No, no, no," he says, shaking his head at the images flickering on the hapless young man's laptop.
"I hate it. I hate it!"
Heidi: "Schatzi... come on." ('Schatzi' is a German term of endearment along the lines of 'sweetie' and both Seal and Heidi 'schatzi' each other relentlessly over the next five hours.)
Seal: "Two minutes."
He turns his attentions back to the laptop and to the hapless young man, who, one is almost certain, will not be schatzi-ed any time in the near future.
"Now, see, I like that," says Seal and he proceeds to outline exactly how he wants the video to look.
Our photographer, Gilles, sensing that time is slipping away, quietly enquires whether the shoot might actually begin, only for a slightly perturbed Seal to reply, "I've got no time. Right now, this video is the most important thing.
"Tomorrow I'm leaving town with my wife and I've got to get this done. We've got the whole evening to shoot this thing."
Heidi goes over to join her husband, offers a few suggestions for the video (which Seal agrees with) and generally provides a soothing influence on her man.
Although when one looks like Heidi Klum, a soothing influence can probably be achieved with minimal exertion.
Good humour is restored - the young man slinks off to work on his laptop and Heidi and Seal switch to photo-shoot mode, with Heidi slipping into the Victoria's Secret pouty, sultry, tousled thing with such ease and agility, one immediately realises how she came to earn £4 million last year.
Seal's new album flicks on, Heidi slithers up and down her husband's leg in time to the music, shaking her hair in his face, and for the first time during the afternoon, Seal has the broadest of grins.
His new video, one imagines, is now all but forgotten.
If one were of a cynical disposition, the couple's openly affectionate nature could be slightly irksome - and even though they're quite capable of hamming it up for the camera, it's clear too that they can't keep their mitts off one another.
There is a barrage of bottom-grabbing and nuzzling.
At one point, Heidi grabs Seal's hands and places them over her breasts with an assertive, "I It has long been an industry joke that the redoubtable Ms Klum had chosen to nickname her breasts Hans and Franz ("Hans is the right one") and by the looks of it, Seal appears to get along famously with both guys.
"I can't remember how they got named but I do know the photographer Rankin was the one who spilled the beans," says Heidi.
"Hans has always been perkier than Franz though, but ever since I've had children, they've been much better behaved."
Seal adds, "Our youngest child is now 11 months old, so I've told Heidi we're booting him out of the bedroom.
"I'm not having it any more.
"This is the longest time I've known Heidi without her being pregnant. She's got her body back and it's real good fun!"
Seal and Heidi make a striking pair. He is the precisely spoken, imposingly handsome, 44-year-old British singer-songwriter, famous for hits such as Crazy and Kiss From A Rose.
He has sold more than 15 million albums, and won five Brits and four Grammys.
She is the 34-year-old star of reality-TV shows Project Runway and Germany's Next Top Model and the industry's third-highest-earning model according to Forbes magazine.
They appear to have it sussed domestically and, of course, financially.
Together they are the face of VW in the US and as part of the deal they were each gifted a new Audi R8.
Seal is a renowned car freak with "eight or nine cars".
'"He's got a Volkswagen Tiguan, a Volkswagen Beetle, a T5, an R8, a Spider, another Audi and some others," says Heidi. "He also wants a Bentley convertible. Our garage looks like a car park."
That a model and a music star should get together isn't headline news.
What makes this union so unusual is how they came to find one another, given the vast differences in their backgrounds and the manner of their meeting.
When they met, Heidi was pregnant with Formula One tycoon Flavio Briatore's child - Briatore having already left the scene.
At the age of 40, Seal found himself embarking on a new relationship and fatherhood almost simultaneously.
"I just launched myself into it," he says.
"When I told my (step)mother I'd met Heidi, she said to me, 'That's so strange, because I was just about to talk to you about adopting a child.' It was obviously meant to be."
Seal first saw Heidi at the 2003 GQ Awards in London, where she was collecting her award for Woman Of The Year.
"She had this amazing dress on, this black, almost see-through dress, and this huge smile on her face," he says. "I remember thinking, 'Wow, whoever goes out with that girl is one lucky guy…'"
Seal left the awards without having plucked up the courage to talk to her.
Three weeks later he was in New York, staying at The Mercer hotel.
Following a heavy night out he headed to the gym.
As he staggered back to The Mercer, he bumped into Heidi. "I was trying to get away from her because I was all sweaty and not feeling well at all," he recalls.
But Heidi wouldn't let him go.
She asked him to join her for a pizza - but Seal didn't realise she was interested in more than just friendship.
"I had no idea she liked me," he says. "And I'm usually quite good with that sort of thing."
"I actually thought I was giving out pretty big signals," says Heidi.
"Maybe not. Anyway, he came for a pizza so I thought he must have liked me a little."
The couple's courtship was complicated by the fact that Heidi had just discovered she was pregnant.
"That wasn't something that was planned," says Seal.
"I guess she must have been in some kind of relationship with Flavio but they were not in love at all."
The couple kept their relationship low-key for a while but after five months Heidi's bump started to show.
"We couldn't do the casual dating thing any more because in four months there was going be a baby," says Seal.
"I hadn't seen her for a bit because we were both working and the next time I saw her, she had a bump. I was like, 'Wow! You really are pregnant.'
"That was the moment I really fell in love - and I fell in love with both Heidi and the baby.
"Up until that point, the baby hadn't been a reality but seeing Heidi like that brought everything into focus. "It wasn't a big step to make; it was more a case of, 'My number's being called and I'd better be worthy of this.'