Ariana Grande shares BTS video from 'the Voice' promo session

Blake, John, Kelly and Ari! Ariana Grande officially joins season 21 of The voice as a coach and has now filmed her first promotional video for the NBC competition series.

The 28-year-old singer shared behind-the-scenes photos and videos of herself filming the sketch with fellow trainers, Blake Shelton, Kelly Clarkson and John Legend.

“Hello and shout! I can’t wait for everyone to see our first promo tomorrow for @nbcthevoice season 21 !!! It’s ….. the most ridiculous and fun,” Grande captioned in her Instagram post . “I love these humans so much and I’m already an emotional mess worrying about saying goodbye to everyone on the day of the final and that nothing has happened or aired yet.”

Noting that she “just can’t wait until we get started,” Grande took her fans behind the scenes of the shoot, which takes place over a campfire where the coaches are playing music.

“It’s so much fun, everyone is at a beautiful campfire, and of course I’m dressed very appropriately,” Grande jokes in a clip, wearing a crystal-embellished Ulyana Sergeenko strapless bodice and matching skirt.

Grande makes her entrance sitting on a large moon, which has a special meaning for her.

“I was entering this beautiful crescent moon, which I love,” he shares. “I have a moon tattoo. It’s my floating moon ticket. It felt very special.”

Clarkson, 39, also shared a behind-the-scenes clip of the shoot, noting, “This is our welcome to Ariana.”

In a teaser clip for the first promo, the coaches are by the fire when Shelton yells, “Look at that amazing star over there!”

“You mean Alpha Centauri?” Ask the legend.

“No! I mean Ariana Grande,” Shelton says as Grande descends on the crescent moon.

ET spoke outgoing Voice coach Nick Jonas on Grande joining the team in May.

“She’s brilliant, obviously. She’ll nail it,” he shared about Grande, before offering some advice. “I think it’s best not to trust Blake.”