They really sound great with or without music. It takes a lot of discipline to do that. I wasn't really feelin' them on the first album, but their sophmore effort is bangin'. I must admit I think if they can hold it together, they could be the real deal. Since Destiny's Child, no real girl group has stepped up to fill the void...They could be the next big thing. I have to say that they have won me over as a fan.