We mark the death on February 7, 1652 – 370 years ago today – of the Italian composer and Sistine Chapel singer Gregorio Allegri, in Rome. He had been born in that great and ancient city 70 years before, in 1582. Allegri is remembered today for a work he composed in the 1630s, during the reign of Pope Urban VIII, entitled Miserere mei, Deus (which means “Have mercy on me, O God”). The Miserere is a setting of Psalm 50 (Psalm 51 in Protestant Bibles).  Allegri composed his Miserere specifically (and exclusively!) for use in the Sistine Chapel (the Pope’s private chapel), to be performed during the Tenebrae services of Holy Week, which occur on the Thursday, Friday, and Saturday before Easter Sunday. Allegri’s setting calls for two separate choirs, one employing five voices and the other, four voices. The choirs alternate with one another until the last part of the piece, during which they join to conclude the Miserere in nine-part polyphony. As the Miserere was performed over the years, embellishments were spontaneously added by the singers, embellishments that eventually became part of any performance but were never written down.  (For our historical information: Allegri’s Miserere is often identified […]