1: Taylor Swift and Ed Sheeran's "Everything Has Changed" mesmerized fans with its heartfelt lyrics and beautiful melodies.

2: The unexpected collaboration between Taylor Swift and The Civil Wars on "Safe & Sound" captured audiences with its haunting beauty.

3: "Bad Blood" featuring Kendrick Lamar showcased Taylor Swift's fierce side in this powerful and unexpected duet.

4: B.o.B joined forces with Taylor Swift on "Both of Us," creating a unique blend of rap and country that surprised and delighted fans.

5: Zayn Malik and Taylor Swift's "I Don't Wanna Live Forever" took fans by surprise with its sultry and emotional duet.

6: Taylor Swift teamed up with Gary Lightbody on "The Last Time," showcasing their incredible vocals and emotional chemistry.

7: "Highway Don't Care" featuring Tim McGraw and Keith Urban showcased Taylor Swift's versatility and country roots in this unexpected collaboration.

8: Taylor Swift surprised fans when she collaborated with Colbie Caillat on "Breathe," a heartfelt and emotional duet that resonated with audiences.

9: "The Lover Remix" featuring Shawn Mendes brought two pop powerhouses together in a delightful and unexpected duet that stole our hearts.