Casey Addison (Tomerong RFS), Leroy Lidbetter (Cudmirrah Berrara RFS), Brett Thomas (Callala Bay) and Amanda Saxton (Cambewarra RFS) were among 1000 RFS volunteers to be given tickets to the fundraising concert which raised more than $9.5 million.

Even more special, all four ended up on stage during legendary Aussie performer John Farnham's concert ending song You're The Voice.

The quartet shared the stage with fellow Australian entertainment royalty Olivia Newton-John and Queen guitarist Brian May.

Sussex Inlet's Leroy Lidbetter said being on-stage during the finale was "absolutely exhilarating".

The 2019 Ulladulla High School graduate spent much of his first summer after school on the Currowan fireground including his 18th birthday, Christmas Eve, Boxing Day, New Year's Eve and New Year's Day.

"Standing in front of 75,000 people all screaming and waving at you sent goosebumps through your body and it was a real privilege to represent the Rural Fire Service," he said.

"There were acts for everyone and the vibes through the audience was just thrilling and was great to see just how many people traveled far and wide to support communities and people affected by this crisis."

While being on-stage was exciting, backstage was just as thrilling.

"Stars like Celeste Barber, Olivia Newton-John, Brian May, KD Lang and John Farnham all wanted their pictures taken with us which was a little strange and the praise and thanks we got from production staff and everyone behind the stage was moving," he said.

"There were standing ovations backstage after our performance with crews lining the hallway and applauding us.