After 1729, Bach also wrote much of his [[chamber music]], orchestral music, and keyboard works. He published many of the latter in his lifetime at his own expense,<ref>ibid.</ref> though most of his compositional output remained unpublished after his death. | After 1729, Bach also wrote much of his [[chamber music]], orchestral music, and keyboard works. He published many of the latter in his lifetime at his own expense,<ref>ibid.</ref> though most of his compositional output remained unpublished after his death. |