There are at least three artists called ZAO:
These are photos from concerts where Zao played, so they may be of other bands that played the concert as well.
Zao / Grade / Spiritfall / Fairweather Oct 28, 2001 Sacramento, California, United States Uploaded by Sacramento Shows
Zao / Luti-Kriss / Killswitch Engage / Ground Zero / A Heart Fades Forever / Life In Your Way Jun 7, 2001 Meriden, Connecticut, United States Uploaded by Streetprophet83
Zao / Hopesfall / Luti-Kriss / Not Waving But Drowning Mar 19, 2001 Charlotte, North Carolina, United States Uploaded by Foreverking