The former mediaeval chapel was dedicated to two patrons, Saint Valentine and Saint Anastasius. This chapel was destroyed about 1470, but rebuilt. It was continually repaired and renovated until its replacement 1895/6 when the current parish church was erected in the Gothic Revival style. This new church now bears the nickname "Musikantendom" ("Dom" means "cathedral" in German) in recognition of the large number of "Wandermusikanten" (travelling musicians) who once lived in Jettenbach, and the church's capacity. Church authorities demanded that there be room for at least half the population when the church was built ensuring that there is the pew-space for 532 worshippers. The church's built-in pneumatic conical-windchest organ of 1,149 pipes was installed by the firm Walcker of Ludwigsburg in 1896.