Hi all,
as an aside to the discussion on Yeson and the singing voice, I read that Sinae, one of the girls in the transgender K-pop band "Lady", had VFS with Yeson in Sept. 2006. From the few videos I could dig up of that short-lived group, her singing voice sounds absolutely normal and healthy, notwithstanding the abysmal quality of the tunes they perform. Nothing definite can be said of her range, as the tunes hardly call for any. But what can be said is that the critical midrange for transwomen, from e' to a', is good, clear, and strong.
Amy