Or rather, his Singakademie sings. . . or something like that.
A standard basilica form sits completely within a Greek-gabled stone volume, but with a wonderful circular stepped dias for the vocalists (er, singers). This circular form is duplicated in the barrel vaulting at the ceiling. A Doric peristyle surrounds. I’ve overlaid plans, sections, and elevations on one another to show the full effect. A similar theme pervades the church design shown below.