text: This composer's last three masses are all in the key of B-flat, and another of his masses is sometimes nicknamed for the prominent timpani solo in the "Agnus Dei."
full_question: This composer's last three masses are all in the key of B-flat, and another of his masses is sometimes nicknamed for the prominent timpani solo in the "Agnus Dei." Another of his choral pieces concludes part 1 with "The Heavens are Telling the Glory of God." The melody from the second movement of this composer's "Emperor" (*) Quartet is now used for the German national anthem. This composer wrote Mass in Time of War and the "Nelson" Mass while under the patronage of Prince Nikolaus Esterhazy, and he also composed an oratorio inspired by Paradise Lost and the Book of Genesis, called The Creation. For 10 points, name this Austrian composer known as the "Father of the String Quartet" and "Father of the Symphony."
first_sentence: This composer's last three masses are all in the key of B-flat, and another of his masses is sometimes nicknamed for the prominent timpani solo in the "Agnus Dei."
raw_answer: Joseph Haydn [or Franz Joseph Haydn]