We all love Connie Britton's Rayna James and Hayden Panettiere's Juliette Barnes, but everyone knows the real stars of ABC's 'Nashville' are Rayna James' daughters. Maddie and Daphne James are played by real-life sisters Lennon and Maisy Stella, who are winning over admirers with their soulful musical performances on and off the show, including fans at the Grand Ole Opry.

On a recent episode of 'Nashville,' the Stella sisters had the opportunity to sing in front of a huge stage crew before one of their mom's sell-out arena shows. The girls used the opportunity wisely, and covered the Lumineers' pop hit 'Ho Hey.' Fans of the show loved the girls' rendition so much that Lennon, 13,  and Maisy, 8, found themselves singing it on the Opry Stage in real life.

On Saturday, April 13, the girls used their simple harmonies and no-frills performance style to blow away Grand Old Opry ticketholders. Lennon kicked off the song by strumming her guitar and singing the first verse before her sister started to chime in with harmonies. For the next verse, Maisy took over the microphone.

By the time the chorus rolled around, the girls belted out the lyrics together and a backing band softly started to add a bass line and steel guitar. When the song closed, the girls smiled at each other, said a simple thank you and walked off stage. So they're humble, too!

When you watch the clip, you'll find it hard to believe that these young singers can't even drive yet. The future looks bright for the Stella sisters.

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