How had Michael Jackson's singing voice changed over the years?

Well as you get older and more mature your voice gets deeper. While growing up, he had a very sweet memorizing voice. By the time he turned, I'd say about 30 something, he lost that sweetness, but still had a very unique sounding voice. I loved Michael Jackson voice. Even his voice got a little deeper in pitch.

I think between Jesus Juice and the various bodily fluids of the young boys he slept with his voice could not HELP but to change! THAT and all the nut-squeezing he did to himself!

Seriously, he IS dead now, okay?

I think his best work was in the beginning.. as he continued to build on his reputation I think that the voice didn't wasn't of the same caliber that it used to be as he aged. The passion and fire just didn't exist for me the way it used to that's all.