The one-off duet was recorded for upcoming ITV1 special Coronation Street: The Big 50, which airs on Friday night as the soap's anniversary celebrations draw to a close.
Kym and Keith are already used to working closely together as Weatherfield love interests Michelle and Ciaran, and this time they're teaming up to belt out a Boyzone classic.
Other newly-announced highlights for The Big 50 will see Norris Cole (Malcolm Hebden) and Mary Taylor (Patti Clare) compete on Countdown and TV favourite Harry Hill pay homage to Ken Barlow.
Additionally, as previously revealed, Kirk Sutherland will be seen auditioning for The X Factor and celebrities will take part in a special Corrie quiz.
Coronation Street: The Big 50 airs on Friday at 9pm on ITV1.
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