See Cam's Reverent Cover of Patsy Cline's 'Crazy'

Singer offers a moving version of the song, written by Willie Nelson, on the Grand Ole Opry

Cam performed a faithful version of Patsy Cline's "Crazy" on the Grand Ole Opry.

During a summertime appearance on the Grand Ole Opry, Cam stood in the iconic wooden circle and delivered a soulful and riveting version of Willie Nelson's "Crazy." The torchy ballad, penned by Nelson and featured on his 1962 debut LP, became a signature song for Patsy Cline, who stood in that same wooden circle dozens of times when it was part of the Opry stage at Nashville's Ryman Auditorium. Since the tune was introduced, it has been covered by scores of artists in nearly every genre, and stands as a favorite of amateur singers to belt out on karaoke night.

But for Cam, who gamely (and chillingly) covered Adele's "Hello" when the song was less than a week old, tackling an oft-covered classic such as "Crazy" is representative of how she continues to challenge herself. The cover of her Untamed LP depicts the "Burning House" singer drinking from a lemon, of which she told Rolling Stone Country: "The idea of just drinking a lemon straight is, life is going to hand you a lot of things that you don't necessarily want to deal with and you should not water it down and sweeten it up. Drink it straight, and deal with it head-on. If you're brave enough to take whatever it is head-on, you win. The world is yours."

The CMA-nominated powerhouse (who is nonetheless inexplicably absent from the list of Female Vocalist and Best New Artist nominees) is gearing up for a solo headlining tour later this fall.