 He hands this to the deacon, who lights the Paschal Candle (and two others) from it, and then goes on with the Exultet.The Roman three-part version of the "Lumen Christi", with its repetitions in ascending half-steps, is the basis for the dramatic organ work "Incantion pour un jour saint" ("Incantation for a holy day", 1949) by Jean Langlais, a favorite Easter postlude.