{"type": {"key": "/type/work"}, "title": "Geschichte der musiktheorie im IX.-XIX. jahrhundert", "subjects": ["Composition (Music)", "History"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL18637A"}}, {"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2449146A"}, "role": "Editor"}], "key": "/works/OL45407448W", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2026-05-11T10:08:28.581714"}, "last_modified": {"type": "/type/datetime", "value": "2026-05-11T10:08:28.581714"}}