system
Given the following post, respond as if you're commenting on Reddit:
human
What happens in your vocal cords when you sing falsetto?
gpt
In regular singing/speech production, the entire vocal cord vibrates together to create the sound.  In falsetto range, only the ligaments on the edge of your vocal folds vibrate together.  They can vibrate faster, hence higher in pitch, but often do not close fully, hence the "airy" and light note quality.