Jann was born in
Kalkberge. In 1948, he began his apprenticeship in
Potsdam with organ builder
Hans-Joachim Schuke. He moved to
Switzerland in 1961, three years later to
West Berlin, to work as voicer for
Karl Schuke. Between 1968 and 1972, he worked as voicer for
Rieger Orgelbau in
Schwarzach, Vorarlberg (
Austria). In 1974, he took over the workshop of organ builder Eduard Hirnschrodt in Regensburg, and a year later, built his first organ for the Catholic Church in Etzelwang. In 1977, the company was relocated to
Laberweinting. == Selected works ==