For 10 points, name this Austrian father of both the string quartet and the symphony.
This composer's most popular works for the piano include his F-minor Variations and his Sonata in E-flat Major. The first part of one of his works opens with the "Representation of Chaos." This composer set lyrics by Leopold Haschka to music in his (*) "Emperor" quartet. An oratorio by this composer is based off descriptions from Paradise Lost and the Book of Genesis. In addition to The Creation, this composer wrote the London Symphonies, which includes his "Surprise" one. For 10 points, name this Austrian father of both the string quartet and the symphony.
This composer's most popular works for the piano include his F-minor Variations and his Sonata in E-flat Major.
Franz Joseph Haydn