He did not move with any deliberation, to the keys that might be expected of him. Instead he wandered briefly into obscure keys using harmony to bring color and a sense of abandon to the music. His style was later adopted by other French composers including Debussy and contributed greatly to the atonality of the 20 th century. Such subtleties do not affect the beauty of the melodies, many of which come from the orchestra. It is a very sparsely scored work.
Some instruments play only a few bars throughout.
In other words, fortissimos do not need to roar.