In the Sacristy of St. John of the Basilica of the Holy House in Loreto, Luca Signorelli made a series of frescoes between 1481 and 1485. The decorations represent the Evangelists (Luke, Mark, Matthew, and John) and Doctors of the Western Church Girolamo, Gregorio Magno, Augustine, Ambrose), in which clearly emerges the influence of the painter Piero della Francesca. The stylistic choice is related to the Tuscan school and it can be seen in the eight Musician Angels. On the walls, there are the Apostles and episodes representing the Incredulity of St. Thomas and the Conversion of St. Paul, which is a masterpiece for the use of perspective and the dramatic force of the painting.