Chrissy Metz appeared on "Good Morning America" hours after making her live singing debut at the ACM Awards in Las Vegas Sunday night.
The "This Is Us" actress was joined by country music stars Carrie Underwood, Lauren Alaina, Mickey Guyton and Maddie & Tae as they sang the song “I’m Standing with You” off the soundtrack of Metz's upcoming movie, "Breakthrough."
(MORE: Milo Ventimiglia opens up about shocking 'This Is Us' episode, Jack's cause of death)"It was super cool and not just because it's an incredible story that inspired the song to be written, but [with] these incredible artists who I've loved for a long time," Metz told "GMA" of the performance." "I don't know what it is, but everyone in the country world, everyone's so supportive and so encouraging. It was really, really special."
In "Breakthrough," Metz plays a mom whose child has a terrible accident and is given very little chance of survival. Metz said she brought light to the set by rapping some songs with co-stars Marcel Ruiz and Topher Grace.
"You've got to find some levity because you're literally crying most of the time, which I don't mind doing -- we all know that," Metz said. "It's very cathartic."
Metz said she got into acting after she took her sister, an aspiring model, to a casting call.
"I'd like to say it's by chance, but I think that everything is sort of destined," Metz said. "I was afraid of my own shadow."
She went on, "My sister comes out of the room. My then-manager says, 'What are you doing here?' I'm like, 'Nothing.' "My sister nudges me, I sing a song ... and then the rest is history."
(MORE: Fate of Kate's pregnancy is center stage on 'This Is Us')"Breakthrough" hits theaters April 17.