Theodor Leschetizky was born on 22 June 1830 at the estate of the family of Count Potocki in Łańcut, Poland. Joseph Leschetizky, his father, was a gifted pianist and music teacher of Viennese birth. His mother Thérèse von Ullmann was a gifted singer of German origin. His father gave him his first piano lessons and then took him to Vienna to study with Carl Czerny. At age eleven, he performed a Czerny piano concerto in Łańcut, with Franz Xaver Wolfgang Mozart, the son of Wolfgang Amadeus Mozart, conducting. At the age of fifteen he started to tutor his first students. By the age of eighteen he was a well-known virtuoso in Vienna and beyond. His composition teacher was Simon Sechter, an eminent professor who was the teacher of many other successful musicians.