These discussions are always fun, even though they are quite silly, really. The inclusion of Liszt is absurd for me. I agree with many here who think Stravinsky should be on the list. Another glaring omission, except from Tommassini's list, is Bela Bartok, who is easily in the top fifteen based on sheer compositional craft alone. It would be difficult to find a list of the best pieces of music ever written that did not include his Concerto for Orchestra. Another interesting omission, though much more debatable, is Richard Strauss - again, for me, probably deserving mention on sheer craft alone, though even he once famously referred to himself as "the greatest second-rate composer," which is one of my favorite composer quotes ever.