Blake Shelton and Gwen Stefani Write a Country Ballad Together
updated 11/08/2015 AT 02:55 PM EST
•originally published 11/05/2015 AT 02:55 PM EST
Blake Shelton and Gwen Stefani have made sweet music together.
The Voice co-stars recently wrote a country song together, PEOPLE has learned exclusively.
Not surprisingly, the resulting effort is impressive.
"It's amazing how good she sounds on a pretty country song," says an industry insider.
Shortly after the new season of The Voice kicked off, the duo got together to write the mid-tempo ballad. According to the insider, the song has yet to be cut and is about telling a lover to leave the relationship if that is what they truly want. (Reps for the singers did not comment.)
On Wednesday, the couple – who both went through divorces this year – confirmed that they officially are dating.
"They've been supporting each other through a difficult time," a source told PEOPLE. " And they're really happy together."
Earlier in the year, when asked if he had ever jammed with Stefani, Shelton mused to PEOPLE, "I don't know musically what Gwen and I would probably ever have in common [laughs]. Pharrell and I probably have a lot musically in common... I don't ever see Gwen and I sitting down and writing songs." However, he was clearly still open to the idea when teased that they may just end up winning a Grammy together: "Maybe so, maybe so!" he answered.