Bonaventura Rubino's Missa de Morti (Requiem Mass) is presented here within the liturgical and musical context that is peculiar to this friar from Bergamo. The polyphonic sections for voices and basso continuo alternate with the liturgical monodies of the ancient Roman rite, in keeping with the melodic and textual codification of St. Pius V's Missal and the Medicean Gradual. The recording of this Mass was carried out in several points of the church, in order to give the listener the physical sensation of the various spots where the ceremony was taking place and the music was being performed.