Content warning: This post contains major spoilers for Stranger Things 4 volume one. Proceed with caution.
What's your 'Vecna song'?
It's rare that a TV series is able to create such a viral moment, or in this case, a question forcing you to think about what music would save you from being gruesomely murdered by a humanoid monster who lives in an alternate dimension.
But then again, Stranger Things is no ordinary show.
Watch: The teaser trailer for Stranger Things 4's volume 2. Post continues below video.
Ever since its first season in 2016, the show has become one of Netflix's greatest triumphs. A science-fiction horror series following a group of kids who save the world. There's 80s nostalgia, friendships, horror, fears and Erica, an 11-year-old character with the greatest one-liners on TV right now.
In May, the highly anticipated fourth season arrived three years after the third, set six months after season three's epic finale. The season received rave reviews from critics and fans alike, tracing multiple storylines across California, Russia and the original setting of Hawkins, while also introducing viewers to a new villain, Vecna.
The impact of the series is easy to see.
It became Netflix's third most popular English-language TV season ever in just one week. Currently, Kate Bush's 1985 song 'Running Up That Hill' is being played on top 40 radio stations around the world. It re-entered the Billboard Hot 100 chart at number eight, much higher than its original peak of number 30.
The story of that song stems from the season's fourth episode.
The bulk of that episode is focused on Sadie Sink's character Max, who has learned she is the next in line for Vecna's curse. Just as he is about to kill her, the gang learns she may be able to be saved by music and play her favourite song - 'Running Up That Hill' - through her headphones.
It works, becoming the scene that spawned thousands of reaction tweets, 'Vecna song' memes and, of course, Emmy award whispers for Sink, whose performance stole the show. The episode has been heralded in media headlines as 'perfect' and 'one of the greatest ever'.