In April 1545, the members of the choir sent a delegation to the choir's "maestro di cappella" at the time, Ludovico Magnasco, petitioning for a new constitution. It was argued that new constitution was needed because all previous copies had been destroyed in the 1527 sack of Rome. Written largely "from memory" with a few additions, it was completed on 17 November 1545. Five years later, the singers rebelled against Magnasco and appealed to Pope Julius III. They accused him of appointing singers without papal permission and without an audition. The most egregious of such appointments was Ottavio Gemelli who was later suspended for thievery. They also complained that Magnasco held back the salaries of several singers without justification and prohibited others from even entering the Sistine Chapel. In November 1550, Julius III ousted Magnansco as "maestro di cappella" and replaced him with Girolamo Maccabei.