In 1783, Mozart wrote a letter to his father. He wrote, in part: "On Tuesday, November 4th, I am doing a concert in the theatre here and, as I have not a single symphony with me, I am writing a new one at break-neck speed, which must be finished by that time." The date of that letter was October 31st. In 4 days, Mozart completed one of his most beloved symphonies, the "Linz." We'll talk all about this brilliant work and how Mozart was able to write such a coherent and beautiful piece in such a short time.