Religion is an important factor of Venetian tradition, which is why you will notice many century-old churches around the city; the Friars Church is one example of a gothic exterior architecture constructed in the 13th century.
The most renowned structure in Venice having architecture from the Byzantine period is the Saint Mark’s Basilica which is the Roman Catholic cathedral found in ST Mark’s Square in the centre of the city.
Antonio Vivaldi was born in 1678 in Venice and started teaching the violin at the Ospedale della Pieta in 1703. His Baroque works allowed him to gain recognition and respect in the city and around the world.
The church of Ospedale della Pieta holds frequent mass services and even some music programs of Baroque style to this day, so it would be interesting to attend some of their events while on your trip in Venice.