In composing the Mass in B Minor, and despite any personal hopes, Johann Sebastian Bach had no reason to expect it would be performed in his lifetime. Meanwhile, musical settings of the mass by other composers, even on a grand scale, were performed. Why was this monumental piece composed, yet not heard in the form we know for more than a century after the composer’s death? Discover the inner and outer worlds of “the most astounding spiritual encounter between the worlds of Catholic glorification and the Lutheran cult of the cross,” the Mass in B Minor.