Well, I listened and it's absolute perfection. In fact everything I've heard from her is absolute perfection. I thought the young Streisand was perfect, but Evancho is even more perfect. I have to say, my plebeian tastes cannot fully grasp such singing. I'm not being sarcastic. It's true. I'm a bit of a low brow when it comes to vocals to be honest. I posted my idea of, not of absolute perfection, but of soulful musical power in #2506 (Simms, not Swift). Maybe that's not your cup of tea, but give a listen anyway. (Listen to Swift for a different reason. This particular song of hers, at least, is worth listening to).
To the extent I'm more highbrow regarding vocals (I love instrumental classical, but not opera), it goes to jazz singing, and that only after listening to early Amy Winehouse, a jazz singer before she became famous.