He postponed his music career to focus on competitive swimming.
But Cody Simpson recently returned to the stage to perform at a Christmas event for Myer department store.
In a video shared to Instagram, the 26-year-old star athlete played electric guitar as he performed Christmas carols to an excited crowd.
Several stunned fans flocked to social media to compliment Cody on his impressive performance.
“So amazing,” one wrote, while another commented: “How incredible it is to see you sing.”
Cody Simpson (pictured) was shocked by his singing voice when he performed at the Christmas event last month
'So talented. Well behaved young man,” a third agreed.
Cody rose to fame as a pop singer in 2009 and shocked fans a decade later when he announced he was expanding his career to focus on swimming.
He is currently in a relationship with fellow swimming champion Emma McKeon, but was previously linked to American pop star Miley Cyrus.
Shortly after their first anniversary, Cody and Emma spent $1.826 million on a family love nest on the Gold Coast.
In a video shared by his mother Angie on Instagram, the star athlete, 26, played guitar as he performed Christmas carols to an excited crowd.
Several stunned fans flocked to social media to compliment Cody on his impressive voice and performance
In September, Cody dropped a major hint that he was preparing to retire from his swimming career.
The star athlete shared a photo on Instagram of the medals he won at the recent Australian Short Course Championships and captioned it with some revealing words.
'My second and last ever Aussie short track champion. It really happened,” he wrote next to the medals.
He also shared a video of himself competing in the Sydney championships and noted that he thought he performed well considering how exhausted he was.
'I was happy to get relatively close to my personal best times while under training fatigue. I thought I'd share a video for my American friends who always wonder what the hell I'm doing.'
Cody rose to fame as a singer in 2009 and shocked fans a decade later when he announced he was expanding his career to focus on swimming.