Ariana Grande and Jimmy Fallon perform “APT.” by BLACKPINK's ROSÉ & Bruno Mars on ‘The Tonight Show’

Ariana Grande was recently a special guest on The Tonight Show with Jimmy Fallon for an interview ahead of the premiere of Wicked: For Good.

The pop star made a theatrical entrance with a medley of iconic duets, performing alongside Jimmy Fallon. She treated her fans to a few bars of Wicked's classic "For Good," before launching into renditions of Marvin Gaye and Tammi Terrell's "Ain't No Mountain High Enough," Brandy and Monica's "The Boy Is Mine," and Lady Gaga and Bradley Cooper's "Shallow." But the moment that went viral and generated the most hype, especially among K-pop fans, was when Ariana Grande duetted with Jimmy Fallon on "APT" by three-time Grammy-nominated artist Rosé, featuring the talented Bruno Mars.

When the news reached South Korea, netizens quickly created various threads on popular forums to comment and celebrate the moment; the comments included the following:

1. Crazy ㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋ

2. Omo she even knows the dance ㅋㅋㅋㅋ

3. Rosé has managed to get half the industry and important figures to sing "APT," a true legend!

4. Hul ㅋㅋㅋㅋㅋㅋㅋ Is the man a singer?

5. The way she's laughing in the middle is so cute ㅋㅋㅋㅋㅋ It felt like dubbing

6. No but why is the man such a good singer?

7. Almost a year has passed and "APT" is still very enjoyable, even in covers.

8. Ariana Grande looks like a fairy

9. Legendary

10. It's so weird hearing foreigners pronounce APT the Korean way ㅋㅋㅋㅋㅋㅋㅋㅋㅋ

11. The ajussi's voice is so goodㅋㅋㅋㅋㅋ

12. Crazy, this is it ㅋㅋㅋㅋㅋㅋ

You can enjoy the official music video for the smash hit "APT" below: