London: Late singer Michael Jackson had once hid in a secret underground tunnel at a concert to avoid talking to his staff, says his voice coach.
Coach Yvie Burnett, who tutored Leona Lewis when she won Britain`s "The X Factor" in 2006, worked with the "Thriller" hitmaker during a tour - and insists she was stunned by his "rude" behaviour, reports contactmusic.com.
"I remember a long time ago, I was working with Michael Jackson and he had a tunnel built which took him from the stage into the dressing room. He crawled into this big white tunnel so he didn`t have to speak to any of us," she said.
"He was probably the rudest (celebrity) because we all went up to meet him and he wouldn`t speak to anyone, not even the crew who were beside him," she added.