Lorde debuted her forthcoming single "What Was That" at a pop-up event in New York's Washington Square Park Tuesday night, about two hours after police had shut down the gathering due to overcrowding.

Lorde is ushering in her comeback with a bit of chaos as the superstar debuted her new single "What Was That" in front of hundreds of fans at Washington Square Park Tuesday night, before sharing Wednesday that the song would drop Midnight tonight,

Lorde's mysterious Washington Square Park event was shut down right before it was set to start on Tuesday evening.