{"title": "Sketches for improvisation", "subjects": ["Improvisation (Music)", "Keyboard instruments", "Methods"], "key": "/works/OL4375010W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL860624A"}}], "type": {"key": "/type/work"}, "covers": [12291703], "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2009-12-10T06:11:02.237809"}, "last_modified": {"type": "/type/datetime", "value": "2021-11-02T01:12:11.411205"}}