Caulton, 45, joined the forces five years ago after working as a dentist on civvie street. Her vocal talents sprang to the fore when she triumphed at the world championships, where she also won prizes for modelling last July.
"I didn't have the best of preparations as beforehand I spent a lot of time in Christchurch identifying victims of the big earthquake from dental records, which wasn't pleasant," Caulton said.
Caulton, who is single, cites veterans like Bette Midler and Barbra Streisand as influences. But it is chart-topper Beyonce who is her No 1 singer.
"I love Beyonce's voice and also the way she performs, but I'm not so good at doing her famous booty-shaking dance."
Next up, Caulton is recording a video in California.
"I hope to soon have commercially available songs that can be downloaded from iTunes and YouTube."