Question: What is the full name of the eldest sibling who performed for the Empress Maria Theresa at the Imperial Court during a visit to Vienna in 1762?
Sentence (from "Mozart family grand tour"): Sensing the social and pecuniary opportunities that might accrue from a prolonged trip embracing the capitals and main cultural centres of Europe, Leopold obtained an extended leave of absence from his post as deputy Kapellmeister to the Prince-Archbishop of Salzburg.
Relevant evidence: No