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Katherine Jenkins, who competed on the show last season and finished in second place, returned to the ballroom as a musical guest, performed on 'Dancing With The Stars: The Results Show' on Tuesday, Oct. 2, 2012 with Spanish tenor and conductor Placido Domingo. The two sang 'Come What May.' Their duet was accompanied by pro dancers Valentin Chmerkovskiy and Anna Trebunskaya.
(ABC Photo/ Adam Taylor)