Michael Jackson, who died in June 2009, would have been 55 today.

Though the King of Pop died four years ago at the age of 50, Twitter was full of birthday greetings and retrospectives of the late singer.

Michael Jackson, who died in June 2009, would have been 55 today

Also, producer Timbaland (Timothy Zachery Mosley) hinted at a new project that could include Michael Jackson’s vocals. In a teaser initially posted on YouTube’s Revolt TV channel, Timbaland talked about being approached by Epic Records executive L.A. Reid about a project that “would be like two kings working together.” Timbaland never mentions Michael Jackson’s name, but the singer’s image appears throughout the clip, which has appeared in several third-party versions since the original was removed from YouTube.

To celebrate his August 29 birth, Sony Music Entertainment is encouraging fans to share birthday wishes — and ideas for making the world a better place — by uploading an Instagram photo or video with hashtags #MJBDay or #MjWeAreOne.

Birthday.MichaelJackson.com will employ Instagram’s API to plot your submission on an interactive map, which lets users click and see other fans’ photos and videos.

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