MADONNA TO BE FEATURED ON 'MILEY CYRUS: MTV UNPLUGGED': Miley Cyrus has tapped the Queen of Pop herself, Madonna, to be surprise guest performer during her MTV Unplugged special. According to E! News, the pair were on a Hollywood soundstage on Monday (January 27th) rehearsing their duet. The special will be taping today (January 28th) and air tomorrow night (January 29th) at 9 pm ET.