Question: Who is both the author of "A Treatise on the Fundamental Principles of Violin Playing" as well as the father of Wolfgang Amadeus Mozart?
Sentence (from "Versuch einer gründlichen Violinschule"): Versuch einer gründlichen Violinschule ("A Treatise on the Fundamental Principles of Violin Playing") is a textbook for instruction in the violin, published by Leopold Mozart in 1756.
Relevant evidence: Yes