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254 years later, Commodore Perry sailed into Tokyo bay. The isolated Japanese shogunate swiftly reorganized in the Meiji Restoration, and Japan modernized at a remarkable rate. Industry, transportation, the military - all shed their old traditional ways and embraced the latest western technique. Society also adapted in the same way. The traditional music of the high society made room for the music of Mozart, Bach, and especially Beethoven. Japanese musicians studied in the west, returning with the latest musical fashion.
One of these was Kosaku Yamada. He studied in Berlin where his name became a source of amusement to the germans (the german transliteration of his name was "what cow", and so he sometimes went by the Czech equivalent "Kôsçak"). But he learned his skill well, and introduced a great deal of western music to Japan: Debussy's Afternoon of a faun, Sibelius' Finlandia, Dvořák's New World Symphony, and Wagner's Siegfried.
He also composed 1600 pieces, many of them german style lieder. But he composed longer pieces like operas and symphonies. This one seems entirely appropriate for Sekigahara and the triumph and peace it brought.