PT Journal AU Kapsa, V TI Johann Georg Orsler - A Silesian Musician in the Service of the Nobility and Questions Regarding His Work SO Musicologica Olomucensia PY 2019 BP 153 EP 165 VL 30 IS 2 DI 10.5507/mo.2019.019 DE Johann Georg Orsler (Orschler); Josef Orsler; Brtnice; inventories; sinfonias AB Originally a Silesian musician, Johann Georg Orsler (or Orschler) was active in many places that are important for the music history of the Czech Lands: he was sent by the Count of Zerotin to study music at Rosetter and Fux in Vienna; in 1720s his activities are documented in Prague, followed by Moravia and Vienna in the service of Johann Matthias of Thurn and Valsassina, Count Franz Anton von Rottal, Count Joseph Johann Adam of Liechtenstein, or Count Thomas Vinciguerra of Collalto. The study summarizes the currently known biographic facts, and searches for the answer to the question of which of the prevalently instrumental compositions preserved under this particular surname were composed by the father, and which have to be attributed to his son Josef, a cellist of the Viennese court music ensemble. ER