Singing sisters Lennon and Maisy beautifully slow down “Boom Clap” with just a guitar and their voices

America’s favorite singing sisters Lennon and Maisy are out with a new cover, and it’s beautiful.

They sing Charli XCX’s “Boom Clap” with minimal musical accompaniment that highlights the girls’ ability to perfectly harmonize.

The sisters rose to fame following the success of their YouTube video “Call Your Girlfriend,” which to date has received over 25 million views.

Since then, they have recorded many other songs, including “That’s What’s Up” by Edward Sharpe And The Magnetic Zeros and Johnny Cash classic “Ring of Fire.”

The sisters have captured the heart of American with their joined Instagram account and beautiful cover songs.

You can catch Lennon and Maisy on ABC’s “Nashville” series, which starts again Feb. 4.