The Cappella Giulia, officially the Reverend Musical Chapel Julia of the Sacrosanct Papal Basilica of Saint Peter in the Vatican, is the choir of St. Peter's Basilica that sings for all solemn functions of the Vatican Chapter,[1] such as Holy Mass, Lauds, and Vespers, when these are not celebrated by the Pope (for functions celebrated by the Pope, the Sistine Chapel Choir sings instead).
On 19 February 1512, Julius II (1503–1513) issued a Bull completely reorganizing the Vatican capella (hence the name "Julia" in Latin, "Giulia" in Italian).
In this new choir, called the Musical Chapel of the Sacrosanct Patriarchal Vatican Basilica, unlike the previous capella, the boy choristers were replaced by female voices, when they sang on major holidays (Easter, Christmas, and Saints Peter and Paul).
Pierre Paul was officially appointed as Choir master (Magister ad nutum Capituli) with a formal act.
"[6] On 7 April 1994, the Cappella Giulia participated in the Papal Concert to Commemorate the Shoah with the Royal Philharmonic Orchestra conducted by Gilbert Levine in the Sala Nervi at the Vatican.