The long-awaited trial of the superstar's personal physician, Dr. Conrad Murray, has finally started. Murray is charged with involuntary manslaughter for the death of the king of pop, Michael Jackson. The co-director of Jackson's "This is It" tour, Kenny Ortega was the first to take the stand. Ortega said just before Jackson died, he confronted Dr. Murray about the state of Jackson's health, in which he was alarmed that the star was "incoherent" at times, and had trouble rehearsing for his upcoming shows. The prosecutor also aired an audio recording of Jackson for the first time, in which the singer sounded drugged-up at the moment.