Kelly Clarkson joined Josh Groban in a performance of the popular song "All I Ask of You" from "The Phantom of the Opera" musical.

Groban welcomed the winner of the first season of "American Idol" on stage for a duet to cover "All I Ask of You" while performing songs from his new album, "Stages," on a PBS special. The album was released in April.

The video of Clarkson and Groban's performance was posted Sunday, accumulating more than 68,000 views.

The full PBS special will air in November.

Watch the video on YouTube here.