Freemasonry played an important role in the remainder of Mozart's life: he attended meetings, a number of his friends were Masons, and on various occasions he composed Masonic music, e.
He often performed as a pianist, notably in a competition before the Emperor with Muzio Clementi on 24 December and he soon "had established himself as the finest keyboard player in Vienna".
The official record has it as "hitziges Frieselfieber" "severe miliary fever", referring to a rash that looks like millet seedsmore a description of the symptoms than a diagnosis.
Mozart's extremely spare funeral did not reflect his standing with the public as a composer: memorial services and concerts in Vienna and Prague were well attended.
The family again went to Vienna in late and remained there until December After a conflict with the Archbishop, Mozart left his Konzertmeister post and settled in Vienna. The cause of death is still not known with any certainty, but the official record refers to his having a rash, which is a symptom rather than a diagnosis.
These procedures reflected common practice at the time, traceable to a decree of Joseph II from governing funeral arrangements; see Josephinism.