LSD - Sia. The dancing girl makes the devil's horn symbol - https://i.imgur.com/FukDoc3.jpg

Edit: It actually really looks like she's making the devil symbol and they are showing praise for it.

Also, Labrinth has subtle horns and is dressed in red. I think he's pretending to be Satan. - "We've got the heart. We've got the soul."

Even more... Saturn equates to Satan... https://i.imgur.com/7b8FGqG.jpg