Mastin successfully auditioned for the third season of The X Factor Australia in 2011, singing Rooster's "Come Get Some".
Before entering The X Factor, Mastin had already recorded an EP.
He eventually reached the live shows and was mentored by Guy Sebastian.
On 22 November 2011, Mastin was announced as the winner and received a management contract and a recording contract with Sony Music Australia.
His winner's single "Good Night" was released shortly after, via digital download. "
Good Night" had sold over 30,000 units within 24-hours of its release.
On 24 November 2011, the song sold an average of one copy every 2.7 seconds, becoming the fastest selling digital single by an artist signed to Sony Music Australia. "
Good Night" debuted at number one on the ARIA Singles Chart and was certified five times platinum by the Australian Recording Industry Association for sales of 350,000 copies.
It also peaked at number one on the New Zealand Singles Chart and was certified platinum by the Recording Industry Association of New Zealand for sales of 15,000 copies.

Mastin's self-titled debut album, which features "Good Night" and selected songs he performed on The X Factor, was released on 9 December 2011.
The album debuted at number two on the ARIA Albums Chart and was certified double platinum for shipments of 140,000 copies.
It debuted at number one on the New Zealand Albums Chart and was certified gold for sales of 7,500 copies.
To promote the album, Mastin embarked on his first headlining Australian and New Zealand concert tour in December 2011.
Mastin successfully auditioned for the third season of The X Factor Australia in 2011, singing Rooster's "Come Get Some". Before entering The X Factor, Mastin had already recorded an EP. He eventually reached the live shows and was mentored by Guy Sebastian. On 22 November 2011, Mastin was announced as the winner and received a management contract and a recording contract with Sony Music Australia. His winner's single "Good Night" was released shortly after, via digital download. "Good Night" had sold over 30,000 units within 24-hours of its release. On 24 November 2011, the song sold an average of one copy every 2.7 seconds, becoming the fastest selling digital single by an artist signed to Sony Music Australia. "Good Night" debuted at number one on the ARIA Singles Chart and was certified five times platinum by the Australian Recording Industry Association for sales of 350,000 copies. It also peaked at number one on the New Zealand Singles Chart and was certified platinum by the Recording Industry Association of New Zealand for sales of 15,000 copies.
Mastin's self-titled debut album, which features "Good Night" and selected songs he performed on The X Factor, was released on 9 December 2011. The album debuted at number two on the ARIA Albums Chart and was certified double platinum for shipments of 140,000 copies. It debuted at number one on the New Zealand Albums Chart and was certified gold for sales of 7,500 copies. To promote the album, Mastin embarked on his first headlining Australian and New Zealand concert tour in December 2011.
Reece Mastin