The eight-voice Mass in D major which Giacomo Antonio Perti wrote in 1683 may be considered a typical example of music used during a solemn celebration in the Bailica of San Petronio in Bologna. The Basilica was one of the most important institutions of its time, being known for its acoustics (which result from its vastness) and for its tastes and tendencies toward excellence: more than a hundred performers were employed during major occasions. During Perti’s long term as music master of San Petronio, the institution experienced its most mature period, enjoying performances by instrumentalists, singer and composers of the highest quality. Perti’s mass reflects the traits of the mature language of the Baroque. Sections of the mass are written in an imitative-counterpoint style, inc ertato style, and in solo style. This youthful work was later reworked by the composer. The performance on this album was recorded live in the Basilica of St. Petronio; the performers were placed in the choir stalls (which took up the entire presbytery) just as the composer had indicated in the original score.