{"created": {"type": "/type/datetime", "value": "2009-12-10T22:14:32.732591"}, "subjects": ["Tonality", "Music, interpretation (phrasing, dynamics, etc.)", "Keyboard harmony", "Music theory"], "latest_revision": 4, "key": "/works/OL7945048W", "title": "Harmonic Materials in Tonal Music", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2649801A"}}], "type": {"key": "/type/work"}, "last_modified": {"type": "/type/datetime", "value": "2020-08-19T04:07:07.106418"}, "covers": [82589], "revision": 4}