Dave and especially Richie have both come more to the forefront of the vocal aspect of Bon Jovi now particularly in a live setting. They sing the bits that Jon simply can't reach or doesn't want to try to reach now for fear of making the problem worse. They've adapted well to the change in his voice over the years and, although it's worsened, I still think it's good enough to release new albums and tour with and I'm grateful for that!