Celine Dion, Carrie Underwood and Usher will take part in a tribute to Michael Jackson at the Grammy awards next week that will also showcase a movie created by Jackson for his 1995 hit “Earth Song.” Grammy organizers said Wednesday that Jennifer Hudson and Smokey Robinson would also join in the Jackson tribute, singing along with the voice of the “Thriller” singer. The Jan. 31 Grammy ceremony in Los Angeles will also feature the first complete showing of a 3-D mini movie for “Earth Song” created by Jackson before his death in June. The song and the movie, about the future of the planet, were intended to be the centerpiece of Jackson's planned series of 50 “This is It” comeback concerts in London last summer. Jackson is to get a posthumous lifetime achievement Grammy this year. Ehrlich said the five singers would perform along with Jackson's voice while the 4 1/2 minute film is projected on a screen behind them. The “Earth Song” film features a young girl who goes to sleep in a verdant forest and awakes to find it destroyed by environmental changes.