But now it's straight up cancelled!
Ticket holders were sent the following email on Friday:
[Image via Fayesvision/WENN.]
Mileybird was joined by her pals The Flaming Lips for the Billboard Music Awards for a Beatles cover from their forthcoming tribute album!
Ch-ch-check out the video (above) to see the psychedelic songsters hit the stage! (Literally! Someone falls down and goes BOOM!)