Fans Were Left Stunned When These Two Music Powerhouses Took The Stage For An Unforgettable Performance That Shook The Crowd! Carrie Underwood And Steven Tyler Teamed Up For A Once-In-A-Lifetime Duet That Brought The House Down—Earning A Thunderous Standing Ovation. Though They’ve Shared The Stage Before, Nothing Compared To Their Electrifying Collaboration At The 46th Annual ACM Awards In 2010!

YouTube/mccbaarCarrie Underwood & Steven Tyler - YouTube

Fans were shocked when they burst onto the stage with this unforgettable performance that shook the earth!

These incredible powerhouses of music paired up for a once-in-a-lifetime duet that left everyone stunned – and even earned a standing ovation!

Carrie Underwood, Enjoying American Idol This Season, Dishes on Judges Steven Tyler and Jennifer Lopez

Both Carrie Underwood and Steven Tyler have shared the stage before, but nothing compares to this performance during the 46th Annual ACM Awards in 2010.

Underwood opened up with her iconic hit, “Undo It” and just a verse into the song, Tyler emerged from behind a moving wall to chime in and complete the knockout hit! But, they weren’t finished there!

Crowd Gives Carrie Underwood & Steven Tyler Standing Ovation During Undo It & Walk This Way Duet

Above: Carrie Underwood performs during the 2011 ACM Awards before bringing rocker Steven Tyler out. (YouTube/mccbaar)

They quickly moved into one of the best performances of Aerosmith‘s “Walk This Way” that you’ll ever hear!

Underwood has always been open about her love of classic rock music and especially Aerosmith’s stuff – so this must’ve been a dream come true for her!

Carrie Underwood & Steven Tyler - Undo It/Walk This Way (ACM Awards 2011) - YouTube

Above: Carrie Underwood & Steven Tyler share a duet during the 2011 ACM Awards. (YouTube/mccbaar)

The crowd was wild and insanely excited, singing along to every word as Tyler showed off his country chops and Underwood demonstrated her rockstar pipes.

Watch these two slay in this smash-hit duet in the video below!