Dierks Bentley staged a surprise show earlier this week at Nashville's legendary bluegrass joint, the Station Inn.

The opening act for his set was the Sandy Bottom Sisters, who turned out to be Dierks' daughters Evie, who is five, and three-year-oldJordan. Evie belted, "Let It Go" from the movie Frozen, and Jordan sang "Twinkle, Twinkle Little Star" backed up by the house band.

Here's Evie performing with her dad two years ago at the Ryman Auditorium...

Bentley also had a couple of older openers on the bill, Kacey Musgraves and Kip Moore took part in the impromptu show.