Forget everything else that went down during Coachella 2018 because the most iconic moment was undeniably that time KJ Apa appeared during Kygo’s set.

People who follow the actor on social-media would’ve been aware that he had teased a performance on his Instagram page last week, writing: “See ya on stage with @kygomusic #Coachella.”

'Let's get checking out That's What She Said: The Mental Health Episode...'

Even so, plenty of festival-goers were surprised when the Riverdale star walked out on stage and showed off his epic guitar skills during a rendition of ‘It Ain’t Me.’

Fans were loving the random guest appearance and pointed out that there’s literally nothing the 20-year-old can’t do: "@kj_apa just slayed it" one person wrote, adding "that guitar solo was everything.”

This isn’t the first time Archie Andrews has proved that he’s a musical prodigy IRL. He often plays the guitar on his Instagram feed and hardcore fans will recall that he released an album in 2012 called The Third Room.

As for how his real-life talent compares with Archie’s passion for music, KJ told The Last: “I don’t know how to say it, but we’re not at the same level, you know what I mean?

“Somehow I have to say that in not a cocky way, but he’s a beginner. Also, the songs that he writes, I don’t think I would listen to them. I do not have the same taste in music as him.”

Tbh, we’re fully on board with either Archie or KJ dropping new tunes.