Sandra DrouckerFrom Wikipedia, the free encyclopedia Sandra Droucker (Drouker or Droucher) (7 May 1875 ā 1 April 1944) was a Russian concert pianist, composer and music pedagogue. Sandra Droucker
Sandra Droucker (Drouker or Droucher) (7 May 1875 ā 1 April 1944) was a Russian concert pianist, composer and music pedagogue. Sandra Droucker