Dwayne Robinson How can you say they're not improving? They're always under training and practicing and trying to improve their dances and singing in order to give their fans and audience the performance they deserve and want accomplish. And being a good vocalist doesn't always mean hitting those high notes. Over half of them were singing stably (and even momo who's the main dancer did a decent job with her line). Give credit where credit is due. Don't say they're not improving because they are. They're figuring out their vocal limits and style and I see that as them learning and improving rather than recklessly singing songs that do not match with their range. Whether the difficulty level of their comeback lowered or not, they execute this song well and to me, that's the big picture. That's what matters.