WATCH: Demi Lovato and Alanis Morissette Serve 90s Flawlessness with 'You Oughtta Know' Duet

The 2015 American Music Awards got a very special throwback treat yesterday when Alanis Morissette and Demi Lovato teamed up for an powerful duet of Alanis' hit single "You Oughtta Know." The two ladies were on fire as they took the stage to ferociously belt the iconic song from Alanis' 1995 album Jagged Little Pill, proving that this will always be a rock anthem we love to jam out to and that we'll somehow always know the words to it as well. 2015 marked Jagged Little Pill's 20th anniversary, and this performance is a pretty awesome way to celebrate. Watch (and sing along) right here!