As a little experiment I used B5 and HB pencils for modeling in this portrait in order to retain the sharp contrast between dark hair and skin tone which is the main visual element in this drawing. I also pushed the thick charcoal stick really hard for the same reason and at 3:32 it snapped in two

Your feedback is much appreciated
List of materials used in this drawing:
Willow charcoal stick
Charcoal pencil soft
Pencil 5B
Pencil HB
Newsprint paper

Music by
Jeremy Blake... Heaven and Hell