Michael Jackson has wrapped up the studio recordings for his all-star charity single "What More Can I Give," which is aimed at benefiting victims of the Sept. 11 attacks on America, a publicist for the project told Reuters on Friday. 'N Sync was the last of nearly three dozen acts to record Jackson's composition in a project that is reminiscent of his 1985 "We Are the World" effort, which raised $65 million for African famine relief. (Jackson has said that he hopes this new single will raise at least $50 million.) Other recording stars who stepped into the project include Ricky Martin, Mariah Carey, Carlos Santana, Celine Dion, Tom Petty, Julio Iglesias, Reba McEntire, Beyonce Knowles of Destiny's Child, Hanson, Brian McKnight, Gloria Estefan, Jon Secada, Ruben Blades and Ziggy Marley. Jackson, 43, who also will be heard on the track, recorded each of the performers individually and planned to mix them together in the studio, said a spokeswoman. The music star intends to issue the single in both English- and Spanish-language versions, but there has been no word on a specific release date.