TENABRAE – Geoffrey Hill – referenced in Sounding the Seasons – Malcom Guite

“Tenebrae (/ˈtɛnəbreɪ, -bri/^[1]—Latin for “darkness”) is a religious service of Western Christianity held during the three days preceding Easter Day, and characterized by gradual extinguishing of candles, and by a “strepitus” or “loud noise” taking place in total darkness near the end of the service,” Wikipedia.

Tenebrae “was originally a celebration of matins and lauds of the last three days of Holy Week (Maundy Thursday, Good Friday, and Holy Saturday) in the evening of the previous day (Holy Wednesday, Maundy Thursday and Good Friday) to the accompaniment of special ceremonies that included the display of lighted candles on a special triangular candelabra.^{[2][3]” – Wikipedia.}