Complex sentence: He is the first man to break a glass in front of camera with his voice, while checking the myth'Can a singer really break glass with just his or her voice?' in the Mythbusters show on Discovery Channel.
Split into simpler sentences: He is the first man to break a glass in front of camera with his voice alone. He achieved this while testing the myth'Can a singer really break glass with just his or her voice?' in an episode of the "MythBusters" television show on Discovery Channel.