Singer Michael Jackson received a clean bill of health by doctors Tuesday, following the singer’s cancellation of the second night of his Singapore stop due to nausea and dizziness. Jackson will return to the stage tonight.

The singer issued a tape-recorded apology late Tuesday, saying he was “taken ill” and vowed to return to the stage tonight. Jackson’s doctor says the singer suffers from severe migraine headaches which will be controlled by medication for the duration of the tour. The mammoth tour begins a two-night run in Taipei, Taiwan on Friday.

The continuing saga of Jackson’s outside troubles added several new players late Tuesday, with noted civil rights attorney Gloria Allred announcing she has been retained to protect the interests of the 13-year-old boy who has accused Jackson of child molestation.

Reports that the boy’s father hired Ernie Rizzo, a Chicago private investigator, are being denied by Richard S. Hirsch, the father’s new attorney.

“Mr. Rizzo is not working for or authorized to speak for the family,” Hirsch, a criminal law specialist, said late Tuesday.

Sources said Rizzo contacted the family concerning information he has about Jackson security consultant Anthony Pellicano, at first representing himself as an investigator for the TV tabloid “Hard Copy.” Rizzo also has contacted the boy’s mother, sources said.

Rizzo told the Associated Press he was hired by the boy’s father and denied Tuesday that the father tried to extort money from Jackson. He further charged that Pellicano fabricated the extortion plot to discredit the father.

In a telephone interview with the AP, Pellicano disputed the statements and insisted the father did attempt to extort $ 20 million from Jackson.

The release of tape recorded conversations allegedly between the boy’s father and stepfather added a new twist to the investigation. The tapes allegedly contain the father discussing in detail how he will confront Jackson and his representatives with the allegations.

In the taped telephone calls provided to the media by Pellicano, the boy’s father says he will ruin Jackson by going public with the allegations the singer sexually molested his son.

“This man is going to be humiliated beyond belief,” the father allegedly says on the tape about Jackson. “He will not sell one more record.”

The tapes do not contain conversations about money, nor do they mention any extortion demands. Pellicano has stated the child abuse allegation arose from a failed extortion attempt.

Sources close to the father say he only intended to confront Jackson about the son’s allegations and never asked for money. He is also said to be “enraged” the tapes were made public and that the conversations were edited and taken out of context. Pellicano obtained the tapes from the boy’s stepfather.

Early Tuesday, Jackson brothers Jermaine and Tito walked away from a scheduled interview on NBC’s “Today” moments before it was to begin, leaving host Bryant Gumbel to explain that the brothers “wanted assurances we would not talk about (the allegations involving) Michael. We could not do that,” Gumbel said. The brothers were scheduled to talk about their reunion concert (Daily Variety, Aug 31) set for Dec. 11 in Atlantic City, N.J.

The brothers objected to the presence of a KNBC news crew on the set, leaving the Burbank studios when the crew would not. The pair kept their appointment with “Good Morning America,” where they expressed support for their brother.

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