Miley Cyrus is having the worst time of her life.

Miley's dog Floyd died on Tuesday, while Miley was on her "Bangerz" tour. She was performing Fleetwood Mac's "Landslide" in Boston when she choked up and cried during a soundcheck on Wednesday.

"I just want to do this song for [Floyd] 'cause we used to always listen to Fleetwood Mac together," Cyrus said. "It was his favorite song to go on runs to."

You can watch Miley's emotional performance in the video below: