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|Died||7 February 1652|
|Occupation||Priest and composer|
Gregorio Allegri (1582 – February 7, 1652), was an Italian composer and priest. He wrote a large number of religious pieces, including motets and several settings of the Mass. His best known compositions is the Miserere mei Deus.
From 1591 to 1596 Allegri was employed in a church choir in Rome. In 1601 he became a tenor in the choir. He studied music and composing with the director of the choir, G. B. Nannio. He moved around to a number of different churches in Rome, before joining the choir at the Vatican in 1629. This was the choir that performed in the Sistine Chapel for the pope. he was made the director of the choir in 1650. Pope Urban VIII had rewritten some of the texts used in the religious services. Allegri was given the job of editing Giovanni da Palestrina's music so that it would fit with the new words. He was seen as an expert in the old style, even though some of his music was written in the new baroque style.
Misere mei Deus
Miserere mei, Deus is a motet written to be sung by two choirs. One choir is five voices - soprano, alto, two tenors and bass. The second choir has two sopranos, alto and baritone. One choir sings a simple kind of tune called a fauxbourdon which is based on a plainchant. The other sings a more complicated version, with a top part which goes up to top C (the note two octaves higher than Middle C). The singers also improvised some parts of the music, making up elaborate ornamented parts. These improvisations were not written down, but were passed from singer to singer in the choir.
Allegri wrote the Miserere to be sung in the Sistine Chapel during the Easter celebrations. During the service, which started at 3.00am, there would be 27 candles burning. The Pope would gradually extinguish the candles until there was only one left burning. The Miserere was performed as the pope prayed at the altar with the single candle.
This piece of music became very popular, and the Vatican did not want anyone else to perform it. No one was allowed to take the music away from the chapel or make copies of it. The Vatican called for excommunication of anyone trying to make a copy. However by 1770 there were three known copies of the music. One of these was given to the Emperor Leopold I by the pope. Wolfgang Amadeus Mozart visited the Sistine Chapel during a tour of Europe with his father in 1770. He was just 14 years old, but heard the piece and wrote all the music out from memory later the same day. A second visit enabled him to check that he had it written correctly. It is believed that Mozart's copy of the music was sent to England where it was published by Dr Charles Burney. It would be assumed that Mozart would have written the improvisations in his copy. Burney's version lacks the improvisations, so it possible that he removed them, and destroyed Mozart's copy to avoid trouble with the church. There were no copyright laws in those days, so there was nothing that the Vatican could do about it.
It is believed that the version of the Miserere mei Deus performed today, is very different to the work that Allegri composed.
- Roche, Jerome and O’Regan, Noel. "Allegri, Gregorio." Grove Music Online. Oxford Music Online. Oxford University Press, (subscription needed), accessed January 2, 2016, 
- Miserere: Classical Net Article - Allegri - Miserere, accessdate: January 3, 2016
- Gregorio Allegri's Miserere mei, Deus: Gregorio Allegri's Miserere mei, Deus, accessdate: January 4, 2016
- Byram-Wigfield, Ben. "Allegri's Miserere: Manuscript Sources". http://ancientgroove.co.uk/essays/sources.html. Retrieved 3 January 2016.