The 38-year-old Boyzone star has gone all acoustic folk for the track, reported Digital Spy.
The album is inspired Keating's wife Storm Uechtritz, whom he married last summer.
"I think it's my best yet. I'm in a great headspace, the songs are all very optimistic and positive. I'm at this place in my life, I feel very secure. It's all optimism and hope - it's because of this woman. I feel very lucky," he said.
Titled "Time of My Life" the album will serve as the follow-up to 2012's "Fires". It will release on February 12.