A glove worn by the late Michael Jackson during the Motown television special where he performed the moonwalk for the first time as he sang "Billie Jean" is displayed at the Fashion Museum in Santiago. (AP Photo/Santiago Llanquin)

A controversial posthumous Michael Jackson album released by Sony Music against the wishes of his estate hits music store shelves Tuesday.

The album, simply titled Michael, includes unfinished songs that Jackson had been working on over the past several years.

The tracks were at different stages of completion, but producers like longtime Jackson collaborator Teddy Riley, Grammy winner Tricky Stewart and rocker Lenny Kravitz worked over the last year to put the finishing touches on an album they believe Jackson would have been proud to call his own.

"I know he stood behind it, so I'm cool with what I did," said Kravitz. "I was proud to put it out and knew that he'd be all over it, that he'd be really with it."

Many of Jackson's family members and associates have spoken out against the recordings, saying the so-called King of Pop would not have wanted anything released without his final approval.

Black Eyed Peas star Will.i.am told Rolling Stone magazine he felt the new album was "disrespectful" to Jackson's memory.

"I knew this man," he said. "And he was very critical about every single detail. He stood in the studio himself, mastering and mixing everything. How can you release a record without that Michael Jackson? It's not Michael Jackson."

With files from The Associated Press

What do you think of the new Michael Jackson album? Is it disrespectful to his memory or should his fans be able to hear the music? Should Sony Music have released the new Michael Jackson album?Let us know in the comments below.