 Beginning in 1543, Pieter Maessens joined him in the Viennese court chapel as assistant "Kapellmeister"; Maessens took over the post of principal "Kapellmeister" on Bruck's retirement on 1 January 1546.Some time after this date Bruck moved to Vienna, and in 1548 to Linz.He continued to compose after his retirement, completing some works for the choir of Stephansdom in Vienna in 1547.