Season 21 of "The Voice" would end with a musical bang.

An unbelievable compilation of some of the world's greatest entertainers would end the show.

The list includes Ariana Grande, Jennifer Lopez, Ed Sheeran, Coldplay, and more.

Grande and Kid Cudi would perform "Just Look Up," their new duet, for the first time.

Sheeran would be returning to "The Voice" to perform his new song, "Shivers."

Lopez shall dominate the stage with her new movie's soundtrack performance.

The NBC show's top final contestants shall also perform with their coaches.

Cast members from "Sing 2" would also give a special performance.

"The Voice" alum Thomas Wells died in November during an industrial accident