What is that song where there is somebody riding a bike with a mask and then a bunch of people come out?

There's one person and you can't see anyone behind them and then a line of people come out, they are all wearing masks, I remember it was weird and it was on the dive on fuse? Also I think it was at night


Thanks!What is that song where there is somebody riding a bike with a mask and then a bunch of people come out?
';What's a Girl to Do?'; by Bat For Lashes.