The Winner Takes It All

"The Winner Takes It All" is a song written by ABBA, who presumably got some residuals when it was used in "The Rejuvication," an episode of the Birdgirl animated television series. It was performed by Peter Marc Johnson and Kether Donahue in their characters of Charles MMXXI and Gillian Sans.

History
Gillian falls in love with Charles after taking Charley's rejuvication church he was in charge of. Charles plays the piano and begins singing before Gillian joins.