his name had been bhakti , but he changed it to bucky shortly before his death ; posthumously , he came to be known as neither , but simply as the bittersweet melodist , for he was , after his deathalbeit not in liferemembered very much for his melancholy disposition , which , in the subjective mists of memory , added a layer of vague and unexplained tragedy to the otherwise whimsical and warm-sounding tone of his music .