Whose song is As someday it may happen that a victim must be found?

Artist		Album
D'Oyly Carte Opera Company		The Mikado - Gilbert & Sullivan
Gilbert & Sullivan		The Mikado
Gilbert and Sullivan		The Mikado - Disc 1
John Ayldon (The Mikado), Colin Wright (Nanki-Poo)), John ...		John Ayldon (The Mikado), Colin Wright (Nanki-Poo)), John ...