In Traetta's biography, the contribution to European opera history with over forty titles, both serious and comic, was always emphasized. It was rather less considered the equally significant production in the sacred field.The "Mass in C", Full Score, which presents in its general structure the typical alternation between choral interventions and soloists, is in fact full of "roundness" and "liveliness" of musical images.The executive proposal of this edition offers the philological transcription of all voice parts and the orchestra. A composition of great charm that helps to learn more in depth the religious repertoire of one of the major European composers of the mid-eighteenth century.