Miranda Lambert turned in a chill-inducing performance of her song "Tin Man" during the 2017 ACM Awards on Sunday night (April 2). The song was a last-minute selection by the country superstar, and her performance featured Lambert onstage alone in a simple black outfit, accompanied only by her acoustic guitar. Her flawless vocals and emotional delivery rightfully earned the singer a standing ovation as she finished the tune.

"Tin Man" is an album cut from Lambert's 2016 double-disc offering The Weight of These Wings. Lambert wrote the song with Jon Randall and Jack Ingram in the summer of 2015.

“I don’t know what a single is anymore. I’ve not ever been one of those artists that’s driven by singles. I’m thankful to have them, and when they’re hits, that’s awesome, but I don’t know if it’s a single or not,” Lambert says of “Tin Man.” “I don’t care, really. I have 24 songs that I want to showcase at some point … I just felt like this opportunity is a time for me to show that I’m a true singer-songwriter, and that, you know, I kind of am all over the map, as far as the emotional journey, on this record, and this is just another piece.”

"Tin Man" is a tribute of sorts to Lambert’s favorite Kenny Chesney song, also called “Tin Man.”

“I was a little worried at first about writing another song like that, but I told Kenny … I felt the same emotion I feel when I hear that song. I was feeling it myself, and the other two co-writers were feeling it as well,” Lambert explains. “It comes from the same place, and I guess that inspired it.”

Lambert recently wrapped up her 2017 Highway Vagabond Tour, during which Old Dominion and Aubrie Sellers acted as openers; however, she has a number of dates -- including the 2017 Taste of Country Music Festival -- on her tour calendar throughout this summer.

See Pics From 2017 ACM Awards Rehearsals, Pre-Show Interviews

How Well Do You Know the ACM Awards?

More From TheBoot