Whitney Houston said it was "hard to express in words" what Jackson meant to her.
"He was my friend," the pop diva said. "He was one of the reasons I got into the music business. He inspired me. He taught me. He laughed with me. He paved the way for African American artists to be played on MTV which was huge.
"My heart is full of grief for his family and his children and I pray that they take solace in the incredible legacy of his music and art."