Source: <a href=https://www.google.com/url?rct=j&sa=t&url=http://www.eonline.com/news/568637/rita-ora-confirms-calvin-harris-prevented-her-from-performing-i-will-never-let-you-down-at-the-teen-choice-awards&ct=ga&cd=CAIyGjViN2YyMDkwMTU0OTZhNWQ6Y29tOmVuOlVT&usg=AFQjCNHev10JUxQ3yQcH_bTAFQl70pHKsw class="colorbox" title="Rita Ora Confirms Calvin Harris Prevented Her From Performing “I Will Never Let You Down” at the …” >calvin harris