Taylor Swift found herself caught up in the tornadoes that swept Nashville while filming her new music video for 'Story Of Us' and was forced to "hide in a room". 

The 'Mean' singer told MTV News about the frightening ordeal, which inspired her to make one of her dress rehearsals for her Speak Now tour available to the public to raise money for the cause:

"There were a few complications. This was actually when a bunch of tornadoes were hitting Nashville."

"We had to hide. All of us, we had to hide in a room where there were no windows, so that was a little bit crazy. [But] other than that, it was incredibly fun."

Talking about her recent 'Speak Now... Help Now!' event, she explained:

"I just felt, if there was any way that I could help with the damage done and all the families who've lost their homes, then I had to think of one. It came to me really quickly that here we are at a rehearsal in an arena where there are empty seats. What if we filled those empty seats and gave all the proceeds to the victims of the tornadoes?"

Watch her perform 'Story Of Us' acoustically for Radio 1 here: