Italian tenor Luciano Pavarotti, centre, performs with George Michael, left, and Annie Lennox from Eurythmics during the “Pavarotti & Friends“ concert in Modena June 6, 2000. Stefano Rellandini / Reuters
British singers Paul McCartney and George Michael, left, perform at the Live 8 concert in Hyde Park in London, July 2, 2005. Stephen Hird / Reuters
In this April 10, 1997, file photo, George Michael, left, and Stevie Wonder perform Living for the City at the 4th annual VH1 Honors in Universal City, California. Mark J Terrill / AP photo
In this August 30, 1988, file photo, singing great Aretha Franklin, right, joins George Michael during his Faith World Tour in Auburn Hills, Michigan. Rob Kozloff, File / AP photo
In this July 2, 2005 file photo, British singer George Michael accompanied by other musicians and children from Africa wave to the crowds goodbye at the finale the Live 8 concert in Hyde Park, London. Lefteris Pitarakis / AP photo
In this January 31, 1989 file photo, George Michael accepts one of his three American Music Awards during ceremonies in Los Angeles. Alan Greth / AP photo
In this May, 11, 2011 file photo, George Michael poses for the cameras at an event to announce his European Orchestral tour in London. Alastair Grant / AP photo
In this July 13, 1985 file photo, from left, George Michael of Wham!, concert promoter Harvey Goldsmith, Bono of U2, Paul McCartney, concert organiser Bob Geldof and Freddie Mercury of Queen join in the finale of the Live Aid famine relief concert, at Wembley Stadium, London. Joe Schaber / AP photo
In this April 7, 1985 file photo, George Michael and Andrew Ridgeley of the British group WHAM! perform during a concert in Peking, China. AP Photo
Singer George Michael performs during the closing ceremony of the London 2012 Olympic Games at the Olympic Stadium August 12, 2012. Stefan Wermuth / Reuters
In this Dec. 2, 1993 file photo, George Michael performs at “Concert of Hope” to mark World Aids Day at London’s Wembley Arena. Gill Allen / AP photo
This file photo taken on June 9, 2007 shows British pop singer George Michael performing during his 25 Live concert at the Wembley Stadium in London. Adrian Dennis / AFP
British singer George Michael performs on the first night of the British leg of his tour at the MEN Arena in Manchester, northern England, November 17, 2006. Phil Noble / Reuters
British pop star George Michael performs during a concert at Wembley Stadium in London June 9, 2007. Dylan Martinez / Reuters
In this Sept. 9, 2012 file photo, British singer George Michael performs at a concert to raise money for the Aids charity Sidaction, during the Symphonica tour at Palais Garnier Opera house in Paris, France. Francois Mori, File / AP photo
