What can we look forward to next Monday in Round 4 of the Blind Auditions on NBC's The Voice? According to this sneak peek clip, the judges will charm, flirt, and say just about anything to win. It's an episode you won't want to miss! Original Air Date: The Voice Blind Auditions, Round 4 will air on Monday, February 20, 2012 at 8 p.m. ET on NBC.