The original purpose is to have it sung in memory of the dead. Sometimes, though, it is sung just because people like the music.
By the way, there are many different musical settings for the requiem mass. The Gregorian chant requiem has been used by the Catholic church for centuries. Composers such as Mozart and Verdi wrote later settings.
a musical composition used in a mass for the dead
The Requiem used in this episode is by Fauré. Don't know who is performing it, though. Does anyone know?
Requiem for a Dream - lux aeterna
Requiem for a dream, Clint mansell i think.
Dies Irae from the Requiem Mass by Verdi has been used in a UK advert for the New Peugeot 407 - 'Perfection'.
It is a piece taken from Verdi's Requiem.
Prior to Vatican II, the Requiem was the Mass in honor of a dead person. The priest would be vested in a black chasuble. It is rarely used today and, instead, a simple memorial Mass is offered for the soul of the deceased individual.
The Dies Irae sequence is a mass text used in many Requiem Masses that is known for its dramatic and vivid depiction of Judgment Day. It is characterized by its powerful and intense music, emphasizing the terror and drama of divine retribution.
The answer is... lots of people!See this section of the Lux Aeterna (Requiem for a Dream) article on Wikipedia: http://en.wikipedia.org/wiki/Lux_Aeterna_%28Requiem_for_a_Dream%29#Music
There are 4 harps used in Saint-Saëns' requiem
A requiem is a funeral mass. An example of it used in a sentence is: After the viewing, they held a requiem in the church for the recently deceased gentleman.
The word you are probably going for is dirge. There are other words that may be associated more with poetry or religious rites but that could be used in the context of music, like elegy, lament, requiem.