Taylor Swift surprised her fans on Halloween by bringing Idina Menzel onstage to sing a duet of Let It Go. Subscribe for more videos: http://full.sc/NfhdwD <br /> <br />Let It Go performance: https://www.youtube.com/watch?v=eBTADWQKB7w <br />Alessia Cara performance: https://www.youtube.com/watch?v=yw-1XT6HSTc <br /> <br />Follow us on Twitter: <br />http://www.twitter.com/whatstrending <br /> <br />Like us on Facebook: <br />http://www.facebook.com/WhatsTrending <br /> <br />Follow whatstrending on Snapchat! <br /> <br />Sign up to our newsletter for the hottest videos straight to your inbox: <br />http://bit.ly/wtnewsletter <br /> <br />Follow our host: <br />Paula Rhodes: http://www.twitter.com/paula_rhodes <br /> <br />Intro music: Orientation - Birocractic <br />http://birocratic.bandcamp.com <br /> <br />Music by Epidemic Sound - http://bit.ly/1Gv4mny
