She's got the X Factor, but we won't be seeing it

THE decision by X Factor producers to not air Mountain Creek State High School's Jazz Coogan's time on the show has been "extremely disappointing", but she still says they were the best days of her life.

The 16-year-old wowed the talent show judges with an acoustic version of Macklemore's song Thrift Shop and made it to the last day of boot camp to be named in the top 10 of girls under 25.

Despite the amazing effort, only fleeting glimpses of her time on the show will be seen by X Factor fans.

Jazz said she was "devastated" when she found out her story wouldn't be told on the top-rating show.

"I felt like I let a lot of people down," Jazz said.

She flew to Melbourne in November to audition for the show in front of star judges Redfoo, Ronan Keating, Dannii Minogue and Natalie Bassingthwaighte.

"It was a massive deal," Jazz said.

She sang an acoustic version of Thrift Shop and received a standing ovation from the crowd and the four judges.

"Redfoo said I made his afro grow two inches and I was ready right now," Jazz said.

"He said, 'Nobody in the world can do what you just did'.

"Ronan Keating said, 'Forget boot camp, forget home visits, you should go straight to the live shows'."

Jazz said it was humbling to have industry professionals talk about her that way.

"It felt amazing. It was the biggest accomplishment of my life," she said.

In her final song, producers threw her a curve ball telling her she couldn't play her guitar and she had to sing her song without it while a professional guitarist accompanied her.

They had little time to get her rendition of the song the way she wanted.

"It was a priceless experience to have and I'm grateful for the support I received," she said.

"It is a blessing."