It's hard to believe Michael Jackson has been gone for nearly a year. June 25 will mark the one-year anniversary of his death.

Miley Cyrus says fans should always let their favorite singers know they love them, and shouldn't wait until they're gone to speak up. She says that's what happened after Michael Jackson's death.

"People go, 'He was the most legendary artist. His music brought people together,' but when he was alive all people did was slam him," she said. "So it's like, 'Don't wait till it's too late to tell the artist that you love them, that you respect them and care about their work.'"

Usher and Jason Mraz remember the King of Pop for his work as a humanitarian.

"It almost breaks my heart that the last 10 years of his life he wasn't credited as the real humanitarian that he was," Mraz said. "As much as he cared for the environment and cared for children, you know, I think the opposite was said about him."

Top music producer David Foster, who worked on some of Jackson's hits, says he wished he "cherished the moments a little more."

Jackson died on June 25, 2009, but he will always be remembered for his songs, lyrics and dancing ability.