Kyuhyun and Eunhyuk's vocal exercise.

1st Octave:

Kyuhyun demonstrates.

Eunhyuk follows.

2nd Octave:

Kyuhyun demonstrates.

Eunhyuk follows.

BUT!

Hyuk tells Kyu that rappers do not warm up like this, they go “YO!” “YEAH”

Kyu just laughs :)