By his 18th birthday, Wolfgang Amadeus Mozart had reached the midpoint of his life. In that year, 1778, he traveled to Paris to look for a job. He and the French capital didn't think much of one another, but he did write a dynamite symphony that bears the city's name. In 1781, Mozart landed in Vienna, where he became a bon vivant, filling his days with concerts, new works, and glittering parties. He wrote his Linz Symphony in 1883 and his Piano Concerto No. 17 in 1884. He was a genius at the hei...