What could go wrong?
Avril Lavigne and Chad Kroeger separated this year after two years of marriage, but they're not finished making music together.
Lavigne took to Instagram to share a snap of her playing the guitar during a studio session with her ex. She said: "YeeHaw! Writing with Chad today."
The two recorded a song together titled "Let Me Go" off Lavigne's 2013 self-titled album.
Avril Lavigne performs with Taylor Swift
At the time of their split, Lavigne said her and Kroeger shared many moments together in and out of the studio.
"Through not only the marriage, but the music as well, we've created many unforgettable moments," she said. "We are still, and forever will be, the best of friends, and will always care deeply for each other. To all our family, friends and fans, thank you sincerely for the support."