Lecture on the iconic work of Bach, for both beginning and experienced listeners of Baroque music. 299 years after the premiere of the St. Matthew Passion, the masterpiece of Johann Sebastian Bach (1685-1750) has lost none of its luster. The oratorio about the passion story of Christ combines deeply human emotion with mathematical ingenuity. Tom Permentier unravels the many secrets that the work contains in a lecture for both beginning and experienced listeners of Baroque music. Tom Permentier is a teacher of music history at the Academie van Grimbergen. During his training at the Lemmens Institute, he was allowed to sing in the Matteüspassie van Bach. The work has not let him go since. Furthermore, Tom is a percussionist, composer, and music teacher. For the online review platform pzazz, he writes about circus, music theater, and opera. This lecture is linked to the performance of the St. Matthew Passion by Carmina Kamerkoor, Kinderkoor Clari Cantuli, and Euterpe Baroque Consort on March 12 in the basilica of Grimbergen.