While Antonio Vivaldi’s “Four Seasons” echoes in concert halls and elevators around the world, for some, his greatest masterpieces are not the scores resonating spring, summer, fall and winter, but rather his sacred music.

Although less known, Vivaldi’s sacred music compositions, according to a researcher and expert on the musician’s life, is probably his greatest contribution to music – featuring an altogether unprecedented combination of deep spirituality and the contemporary trends of the time. And this profound personal spirituality was rooted in what is likely a little-known fact for many: Antonio Vivaldi was a Catholic priest.