{"last_modified": {"type": "/type/datetime", "value": "2010-12-05T11:28:36.995959"}, "title": "Wahre Grundregeln des Gregorianischen oder Choralgesanges", "created": {"type": "/type/datetime", "value": "2009-12-10T20:33:09.647755"}, "subjects": ["Gregorian chants", "Instruction and study"], "latest_revision": 2, "key": "/works/OL7182791W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2056739A"}}], "type": {"key": "/type/work"}, "revision": 2}