The Voice Nathan Kneen
Nathan Kneen singing 'Nessun Dorma' at The Voice Australia 2017 Blind Auditions. TheVoiceAu/Facebook

“The Voice Australia” 2017 season six, episode 6 was an emotional roller coaster ride. The episode introduced us to many talented singers and their heart-wrenching life stories. The contestants ranged from a young singer whose mother disappeared when she was six, to an older performer who did not touch a mic for the last 14 years. By the end of the episode, both Boy George and Seal dominated with 11 contestants each.

The episode kicked off with British-born rockstar Spencer Jones, who moved to Australia for his lady love. The 47-year-old supported many musicians including Led Zeppelin, Thin Lizzy and Ozzy Osborne during their tours in the 90s. He rocked the stage with Led Zeppelin's “Black Dog” and immediately got the approval of three judges. In the end, he went on to join Team Kelly Rowland.

"You literally just almost took me out of this seat," said Kelly. "For me, I'm just ready to get started." His daughter Juliette, who was also in the audience, told him to join Team Rowland. It was Juliette who inspired Spencer to appear on the show. The daughter formed her own charity, which raises funds for Motor Neuron disease, after losing her maternal grandfather to the illness.

Next up was 16-year-old Grace Laing, who previously appeared in “The Voice Kids” and made it to the top six with Team Delta. Laing still shared a good connection with Delta Goodrem, who could barely contain her delight after seeing her. The teenager belted out Tori Kelly's “Should've Been Us'” and joined Team Delta once more after Goodrem went on stage to hug her.

Dale Ostridge came next and sang “Don't You Worry Child” by Swedish House Mafia. He appeared nervous after missing a beat, but Rowland came to his rescue and asked him to sing another song. She also told him to imagine that he is alone in a room. As he did so, the 24-year-old landscaper from Camden NSW belted out an impressive “Georgia” by Vance Joy. One could not help but notice a huge difference between his first and second performance.

“The Voice Australia” 2017 then heard the most heart-wrenching story ever from a contestant. Her name is Sarah Stone. "When I was six years old, my mum dropped me off at school and that's the last time we ever saw her," she told everyone in the audience. Her dad Stephen and brother Alexander were there to support her. She sang “Autumn” by Paolo Nutini and dedicated it to her mother. All four coaches turned their chairs, but Stone ultimately chose to be on Team George.

Yasmina Despot was next, enthralling the audience with “Whatta Man” by Salt-N-Pepa. However, the 34-year-old high school teacher from the Gold Coast was not selected, and the coaches asked her to try her luck next year. "Just because we don't turn around, doesn't make it a fail,” Seal consoled her. Following her was actor Anthony Sharpe, who was seen in “Miss Fisher's Murder Mysteries.” He sang The Killers' “Mr Brightside” and joined Team Delta.

Save the best for last, they say, so “The Voice Australia” 2017 had Nathan Kneen, who was once the founding member of opera band The Ten Tenors. He had not touched a microphone for 14 years because of an anxiety-related illness. He chose “Nessun Dorma” by Giacomo Puccini in a goosebump-inducing performance. In the end, he joined Team Delta. Check out his performance below. Stay tuned for more updates and the next episode recap.