Rita Ora debuts Ed Sheeran collaboration on first night of U.S. tour...

Seems Rita Ora is determined to crack the States once and for all. She kicked off her U.S. 'Body On Me' tour in San Fransisco last night, and debuted her new Ed Sheeran-penned song 'Us.'
So important this is to her that she bailed on attending the X Factor premiere party due to this very tour. The song sounds cute, but I need to hear it in better quality.