Created new comment in Search: I suppose that this [link](http://api.billboard.com/apisvc/chart/v1/list?api_key=bvk4re5h37dzvx87h7rf5dqz&format=json&id=334&sdate=2011-01-01&edate=2012-01-01&start=1&length=20) should give nonempty results, but it doesn't. Can you help us?
