06:53 AM EDT 12/17/2014
Originally posted 08/27/2013 08:00PM
Horn blew away Chenoweth and the unsuspecting audience at the Hollywood Bowl with her considerable vocal abilities after backup singers randomly pulled her up on stage to sing "For Good," a duet from the Broadway musical Wicked, in which Chenoweth played the original Glinda.
A video of the performance quickly went viral after being uploaded to YouTube by Horn's friend, Mike Kestler. Horn commented on the page that the duet was not planned.
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