identify error code 4

Hi, I don't understand this error :

{"response": {"status": {"version": "4.2", "code": 4, "message": "query - Missing Parameter: query is required with a POST content-type of "application/x-www-form-urlencoded" or "multipart/form-data""}}}

...when I send this command via cURL :

curl -F "api_key=XXX" -F "code=ABC" -F "version=4.12""http://developer.echonest.com/api/v4/song/identify"> info.txt