Lately anything, even well-intended, related to Michael Jackson has a tendency to stir up drama, and it looks like the upcoming tribute concert in his name is no exception. The executors of Jackson's estate have recently sent a letter of complaint to the concert's promoter, Global Live Events, objecting to the execution of the concert, titled "Michael Forever," which they argue stands to sully the King of Pop's legacy. 

The letter, which asserts that it is the estate's sole responsibility to "protect, preserve and perpetuate Michael's legacy" and was obtained by TMZ, takes issue specifically with the planned inclusion of the band KISS as performers at the concert, despite the fact that lead guitarist Gene Simmons has publicly slandered Jackson as a child molester. 

"It was extraordinarily embarrassing when no sooner than you announced this 'news' that he would participate in your concert that TMZ posted an item noting that Mr. Simmons called Michael Jackson — the man you are purportedly honoring — a child molester, notwithstanding the fact that Michael was acquitted by a jury," the letter, penned by lawyer Howard Weitzman, reads.

Also at issue is the beneficiary of revenue from the concert, which Global Live Events says will support charities despite the fact that 100 percent of ticket revenue will be retained and only additional contributions are to be set aside for donations.

"We are extremely concerned about Michael's legacy, his fans and the public at large," the letter concludes, asking Global Live Events to address the outlined concerns.

So far, many members of Michael's family have supported the concert, including his mother Katherine, his father Joe, and the siblings LaToya, Marlon, Jackie and Tito. Brothers Jermaine and Randy have spoken out against the event, while Janet has yet to comment. "Michael Forever" is currently scheduled for October 8 in Cardiff, Wales.

(Photo: Kevin Mazur/WireImage)