VIDEO : Taylor Swift and Alanis Morissette Duet 'You Oughta Know' on 1989 Tour

Taylor Swift?s 1989 tour continued with special guest Alanis Morissette. During her show at Los Angeles? Staples Center on Monday, Swift brought out the famed singer, who just celebrated the 20th anniversary of her groundbreaking album, Jagged Little Pill. Swift said before introducing Morissette, ?She defined the music of her decade, she inspired a generation of confessional female singer-songwriters who all of a sudden felt like you could actually say these raw feelings that you had. And she has written some of the most brilliant music ? in particular probably inarguably the greatest breakup song of all-time.?