In the 1630s, this piece was composed for two choirs with four and five singers respectively to perform in the Tenebrae services. For 10 points each:
[10m] Name this setting of Psalm 51 which was originally to be performed in the Sistine Chapel. This work’s famous top C in the treble soloist was largely an invention of Charles Burney’s edition.
ANSWER: Gregorio Allegri's Miserere [prompt on Miserere by asking "by which composer?"]
[10e] At age 14, this composer legendarily went to two performances of the Miserere and immediately transcribed the entire piece. This Salzburg-born prodigy died in 1791, leaving his Requiem unfinished.
ANSWER: Wolfgang Amadeus Mozart
[10h] The lower voices open this movement from Mozart’s Requiem with a loud A minor melody over fast strings. This movement, which repeats the words “flammis acribus addictis,” immediately precedes the Lacrymosa.
ANSWER: “Confutatis maledictis”