"I don't have a dog in this race, so I don't want to be painted as a guy who's trying to mask anything, " Payne said when Jackson lawyer Brian Panish suggested he was downplaying concerns about Jackson's health in the days before he died.

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Attorney Brian Panish, who represents Katherine Jackson, said the drug problems worsened when the pop star was under the stress of live performances.

NPR: Jackson's Private Life On Display In Civil Trial

Brian Oxman, a former attorney for the Jackson family who was with the family in the hospital emergency room on Thursday, also expressed concern about medications the pop star was taking.

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But the Jackson family's lawyer, Brian Oxman, was reported by ThisIsLondon.com and New York Daily News as saying that the show's organizers had pushed Jackson too hard to physically prepare for the string of shows.

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There he worked on projects with Michael Jackson, Dave Brubeck, The Cure, Brian Eno, David Bowie, Mel Torme, Sam Shepard, David Byrne, Norman Mailer, Apple Computer (Knowledge Navigator, Newton) and many others.

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Murray, AEG and Michael Jackson were part of an intricate puzzle that plaintiff's lawyer Brian Panish said he intended to piece together for the jury in the coming weeks.

NPR: Civil Trial Depicts Two Sides Of Michael Jackson