[2007] This really convinced me! Utada is THE best!

[Kikaru]

Hikki's biggest problem - she has a problem with breathing. It's one thing to breath like that when singing and dancing at the same time, but standing there and just singing while breathing like she's just run a mile isn't exactly what is expected of a good singer. It shows her lack of diaphragm support.

And singers can gain vibratos as they gain more control or better control of their voice. Many beginning singers doesn't have vibratos, but can gain one with more training and practice.