function onPlayerReadyVidible(e){'undefined'!=typeof HPTrack&&HPTrack.Vid.Vidible_track(e)}!function(e,i){if(e.vdb_Player){if('object'==typeof commercial_video){var a='',o='m.fwsitesection='+commercial_video.site_and_category;if(a+=o,commercial_video['package']){var c='&m.fwkeyvalues=sponsorship%3D'+commercial_video['package'];a+=c}e.setAttribute('vdb_params',a)}i(e.vdb_Player)}else{var t=arguments.callee;setTimeout(function(){t(e,i)},0)}}(document.getElementById('vidible_1'),onPlayerReadyVidible); We finally know why they got bad blood. The truth behind the Taylor Swift and Katy Perry feud has been largely a mystery. We could guess it had something to do with backup dancers, as Swift previously told Rolling Stone her song “Bad Blood,” rumored to be about Perry, was about a singer “who basically tried to sabotage an entire arena tour.” Facts were scant, though.