Season Four of 'The Voice' opened on Monday night (March 25) with identical twins from Rochester, N.Y. -- the Morgan twins.  As the show opened, all of the celebrity judges were wondering what was happening on the stage behind them because they heard more than one set of footsteps.

When they heard their superb harmonies, all four judges -- Blake Shelton, Adam Levine, Shakira and Usher -- couldn't resist turning their chairs to take a look at Cara and Rhian Morgan.

They've been singing publicly in the Rochester area since they were 14 and already have experience in another major talent competition. The Morgan twins were contestants on 'American Idol' during Season Two, when they were 17 years old.

All four judges begged them to join their team, and they chose to become the first members of Team Blake.