Giovanni Allegri is often mistaken for Gregorio Allegri, an Italian composer of the Roman School and a singer as well as a priest, born in Rome in around 1582. However, there is no prominent historical figure named Giovanni Allegri in the context of art or music that aligns with the query. The confusion likely stems from the similarity in names.
Gregorio Allegri is best known for his Miserere mei, Deus, a setting of Psalm 51 that is famed for its haunting beauty and the mystique surrounding its performance practice in the Sistine Chapel. The work was kept secret for many years, and it was forbidden to transcribe or publish it. According to a popular story, the young Wolfgang Amadeus Mozart heard the piece during a visit to Rome and later transcribed it from memory, leading to its wider dissemination.
Allegri's career was deeply intertwined with the church; he sang in the choir of San Luigi dei Francesi from 1607 to 1609, and later in the prestigious Papal Choir at the Sistine Chapel, starting in 1629. His compositions, although less prolific than those of some contemporaries, were significant contributions to the body of Roman liturgical music. He was well-regarded by his peers and superiors, and his works were influential in the development of Roman Church music.
Allegri died in Rome on February 7, 1652. The legacy of his Miserere, in particular, endures as a touchstone of choral repertoire and a symbol of the sacred music tradition of the Roman Catholic Church.