Nikk said: "This feels like a dream."
Proud mum Carolyn, from Greetland, watched as they supported boy band Blue in Peterborough.
Millions watched the former Huddersfield Grammar School pupil lose out in the final of ITV's Popstars: The Rivals last year.
But Nikk, 19, and four other entrants have signed a three-album deal with record label Concept Music rumoured to be worth £500,000.
Nikk added: "We were worried people would forget about us. But I have found we have a fans' website."
Carolyn said: "He is so excited. He is having a ball. He's doing what he wants to do and it must be wonderful.
"I only wish we could see him more.
She added: "We have never seen him live before, but there have been girls running to the front at concerts trying to touch him."
The group's debut single, Hold On Me, is out on October 27.
Also in Phixx are Chris Park, Pete Smith, Andrew Kinlochan and Mikey Green. They have been working with Blue's Lee Ryan and Westlife's Bryan McFadden. The group is being managed by Nathan Moore, the former singer with 80s band Brother Beyond.
