有關男高音的問題 ......

The meaning of Modal:
- normal
- average
- by statistic

Modal Voice:
It is about the voice that male can reach normally.

Falsetto:
A male voice in an upper register beyond its normal range.
The treble range produced by most adult male singers through a slightly
artificial technique whereby the vocal cords vibrate in a length
shorter than usual.

Tenor is a type of male singing voice.
It is the highest male voice within the modal register.
The typical tenor voice lies between C3, the C one octave below middle C,
to the A above middle C (A4) in choral music, and up to high C (C5) in
solo work.
The low extreme for tenors is roughly B♭2 (two B♭s below middle C).
At the highest extreme, some tenors can sing up to two Fs
above middle C (F5).