Actually, it's not just the vibes. It's all of the 2011 add-ons. I guess the old tempo ranges (which are still listed) don't really mean anything either? I guess now its just trial and error until you get something that works? Can't rely on the old tempo designations? I'm not sure most users are going to realize that. Some of the instruments have tempo ranges listed, and some do not. Looks like an oversight, but maybe I'm wrong.