Wikipedia has this to say "A dirge is a somber song expressing mourning or grief, such as would be appropriate for performance at a funeral. The English word "dirge" is derived from the Latin Dirige, Domine, Deus meus, in conspectu tuo viam meam ("Direct my way in your sight, O Lord my God") , the first words of the first antiphon in the Matins of the Office for the Dead. The original meaning of "dirge" in English referred to this office."