Written by: Music by: Lyrics by: Date: Publisher: "The Heart Carol" is a song featured in the My Little Pony: Friendship is Magic episode, "Hearth's Warming Eve". It is sung at the end of the play by a choir consisting of the six main characters, Spike, and an audience of ponies. It is notably the first song on the series where Spike sings, though his singing voice is not heard clearly until a song later in the third season.