When Percy Aldridge Grainger died on February 20, 1961, he was discontent with himself and his works. He felt they were being neglected, not being played enough. It might be that he wasn't truly seen as a virtuoso of compositon until after his death. You can see (hear) that his pieces are amazing, if you have any taste in classical music.
Percy didn't study with the masters of composing, he worked with amatuers, and he still turned out very well. Percy didn't start composing at 6 or 7, he began at 17, and still ended up writing over 600 published pieces. Percy didn't go to a prestigious school and study compostion with professors, and he still turned out to be a phenomenon.
