SoHyang talking about her range

During the interview with Mr.Emre, she said her highest note is around high Eb.
Because of 'High', people think it means Eb6 but As you know on, her highest note revealed was A6 so far, so her highest note can't be Eb6.
She meant Eb7.
Because of those confusing terms she said, 'I don't know', 'Doesn't matter, I just want to sing'.

If you're a fan of vocal analysis, you would be friendly with those vocal terms like 'High' or octave numbers.
But if you're not into it, it can be confusing sometimes. Especially when we have our own terms in Korea.

You usually count the octaves from Piano. But in Korea, we count from human modal voice (male) which is 3rd octave.
We often say it's Middle C but, Even middle C is confusing people sometimes, because it's C4 technically but, it's referred as C3 in many cases.
No matter what they call whatever, she meant 'D7 or Eb7'.

That's why they said '5th octave' during the interview. Eb7 is 5-octaves higher octave from C3.

But she said she hasn't measured her vocal range so she doesn't know exactly.

While they were talking about her highest note, they just laughed out because someone said 'Infinity!'.