Up until now, the Australian singer-songwriter Sia has had greater success penning songs for other singers than for herself. She seems determined not to let that happen again, going for full virality at every turn with her new single “Chandelier.” Her video for the song, in which a little kid dances, is doing “History Of Dance” numbers on YouTube, and she recently recreated the video on Ellen. Last night, while serving as the musical guest on Late Night With Seth Meyers. Sia remained face-down atop a bunk bed the entire time, while Girls creator and star Lena Dunham spazzily danced around the stage, putting on a spectacularly bugged-out show that probably convinced a few insomniacs that they were hallucinating last night. Check out the performance below.

Sia’s album 1000 Forms Of Fear is out 7/8 on RCA/Monkey Puzzle.