This format was first used in the third season of the American version of The Voice.

In the first two seasons of the American version, the Eliminator was a scored event.

On the fourth season of the Australian version, there were two atypical eliminations.

This element also appeared in season two of the Israeli version, but it was called a Double Battle instead.

More double-length legs were shown from seasons seven to ten, fourteen and season one of the Australian version.

It also appeared as a detour in the 5th leg of the 15th season of the original American version.

She has been also guest in the second season of the Italian version of the show.

Even though this is the first season of the Philippine version, several twists and changes were already incorporated into the game.

The first season of the Chilean version was premiered on television in March 3, 2011.

Harper also appeared on the first three seasons of the Australian version of the show.