ACM Awards: Why 'This Is Us' star Chrissy Metz performed

This is Chrissy. 

"This Is Us" star Chrissy Metz wowed the audience at the American Country Music Awards on Sunday. 

The actress made her live-TV singing debut to premiere "I'm Standing With You," from her upcoming film "Breakthrough." Carrie Underwood, Maddie & Tae, Lauren Alaina and Mickey Guyton joined her onstage for the emotional tune. 

Fans of "Us" have heard Emmy-nominated Metz sing before, but for many this may have been their introduction to her talent.

"It's one of those bucket list moments you didn't think would actually happen," Metz said last week. "Standing on stage with five incredible women who are brilliant vocalists and artists is beyond thrilling."

Contributing: Cindy Watts, Nashville Tennessean

At the ACM Awards: Reba McEntire speaks up for women during monologue

More about Metz: Abuse, divorce: We were shocked by these five things in Chrissy Metz's book, 'This Is Me'