“When I am Laid in Earth” also known as Dido’s Lament from the opera Dido and Aeneas by Purcell. Often played in instrumental form on occasions such as Remembrance Day but not anywhere near as moving when sung. I also remember seeing on TV Grace Kelly’s funeral in 1982 with Prince Rainier sitting on his own with tears streaming down his face whilst an orchestra played Barber’s Adagio for Strings. Very moving.