Nelly Furtado, Joss Stone, and Natashia Bedingfield are three of the ladies who are going to hit the stage in at this weekend’s Concert for Diana. They’re also three of the ladies who have come by our Unplugged studios and kicked some acoustic butt. Breezing through their individual sessions might be a good way to prep for Sunday’s show. The entire six-hour extravaganza is being streamed on VH1.com starting at 11 a.m. EST. Which artist is going to rock the house?