Caylee Hammack

It was a truly one-of-a-kind performance.

Sara Evans, Caylee Hammack and Rachel Wammack also helped Rucker raise money for St. Jude Children's Research Hospital.

The summer tour kicks off in late May.

Her dad actually helped inspire the song.

Stapleton lends his searing voice to an already powerful song.

'Just Friends' starts out as a love song, but things get rocky pretty quickly.

“My sister and I were so close as kids," she says, "but then life just ripped us apart.”

He's joined some of country music's hottest new artists for a new take on an old classic.

It's a song she's turned to during these difficult times.

"Redhead" appears on Caylee Hammack's forthcoming debut album.