I was just in a big hole of despair – you're just dropped into nothingness...

HERE in Nottingham, Katty Heath is best known as the singer with Spotlight Kid – a gloriously noisy alternative rock band, once described in this paper as "sounding like 20,000 bees trapped in a wind tunnel".

But over in The Netherlands, where she has been living since 2011, Katty is more likely to be recognised as a contestant on The Voice Of Holland, the TV talent show which spawned last year's The Voice on BBC1.

Swapping the grime of the indie circuit for the glamour of the television studio, Katty's transformation couldn't have been more complete – but as she now reveals, her journey was a largely dispiriting and disillusioning experience.

"I was never a big fan of those shows in the first place", she explains, talking to the Post from her houseboat in central Amsterdam.

"So I was going a little bit against my morals, I guess. But I felt that if I was going to have a permanent life here, I really want to have a music career here.

"I thought, well, this could be a fast track way of making some connections in the industry."

Persuaded to give the show a try, Katty applied online, and was invited in for a couple of selection rounds.

These proved successful, as did the first two televised rounds: the "blind audition", where the show's judges cannot see the contestants, and the "battle round", where each singer goes head-to-head with a rival.

Katty sailed through them all, landing herself a place on the first of the live shows.

At this point, the eager contestant felt what little control she had over the process slipping away.

Rejecting all her song proposals – Fleetwood Mac, Portishead, Nina Simone, Kate Bush – as "too unusual, not commercial enough, or too obvious", the show's producers insisted that she tackled Katy Perry's Firework instead.

"Oh my God, I hate that song! And as the build-up came, it was very intensive. You're in every day from nine in the morning until ten at night.

"It's very tiring, so you're not really in a fit state to sing to your biggest audience in your life."

Swamped by a noisy arrangement, complete with mid-song pyrotechnics – the very opposite of what she had wanted – Katty did her best, but the voting went against her, and she failed to qualify for the next round.

A pre-recorded version of the track was immediately placed on iTunes, but "we never see a cent of that".

In fact, none of the contestants are paid to be on the show.

"The only thing we received from it was a phone, because it was sponsored by Samsung.

"When you're in the show, you're like: this is amazing, I'm loving the fame! And then as soon as you're out of it, you're like: Oh my God, it's just a money-making machine, and we are pawns in it.

"The first week after, I was just in a big hole of despair. You're just dropped into nothingness.

"There's no kind of follow-up, to see if you're OK. From beginning to end, it's six months, and you can't really commit to anything else in your life. So I was sort of broken: financially, emotionally and psychologically."

Tied by a year-long contract, which forbids her from releasing any other material until the end of March, Katty found herself in limbo, unable to capitalise from any immediate post-show opportunities.

More humiliatingly still, she was even turned away from the doors of the studio, when attempting to watch one of the later live shows.

"Sometimes I feel like I shouldn't have done it", she reflects. "But I still think it was a valuable lesson, and a learning experience."

When asked what advice she would give to anyone contemplating a similar move, Katty pauses before answering.

"Don't expect to get paid. Don't expect it to be the be-all and end-all. Just see it as an experience, rather than a solution.

"See it for what it is: entertainment, a TV show, and very quickly you're going to be yesterday's news.

"Take from it what you can, but don't be deluded into thinking it's about you. Because it's not. It's about viewing figures, and the company making money out of you."

The most intrusive part of the whole process for Katty was having her past scrutinised.

"We all had to have an interview with a private investigator, who had already investigated us," she says.

"That's to protect the company, because if people come forward with stories about you, they want to be prepared."

She adds, laughing: "So of course they were with me for a long time, because I've had a right shady past!"

Spotlight Kid's single Budge Up is out on Monday.