Mark Ballas Dances to Pia Toscano Serenade on 'Dancing with the Stars'

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Arguably reality television's most talented (rumored) couple, Pia Toscano and Mark Ballas, gave an emotional performance on the same stage on Tuesday night.
The former "American Idol" hopeful visited the "Dancing with the Stars" set to provide the background music for Mark as he danced with fellow pro Karina Smirnoff.
"It's not often that a cast-off from 'American Idol' goes directly from the elimination in the studio across the hall into our ballroom," host Tom Bergeron said of the two shows that both tape at CBS Television City in Los Angeles. "But thankfully this time it happened."
Click the video to watch Pia serenade her beau, singing "I'll Stand by You." Tune in for an all-new "Dancing with the Stars" Monday on ABC.