(CNN) -- Mary J. Blige, Sheryl Crow, Wyclef Jean and Norah Jones join CNN for a live global telecast honoring ordinary people doing extraordinary things.
Singer/songwriter Sheryl Crow will preview her 2008 album "Detours" with a live performance of one of her new songs.
"CNN Heroes: An All-Star Tribute," hosted by CNN's Anderson Cooper and Christiane Amanpour, honors the most outstanding viewer-nominated CNN Heroes as chosen by a Blue Ribbon Panel of world leaders and luminaries.
The December 6 gala at the American Museum of Natural History in New York is the culmination of a five-month audience nomination process to recognize some of the people among us who see a world of possibility and hope.
The show will include performances from Grammy Award winners Blige and Crow and a duet by Grammy Award winner Jones and acclaimed performer-producer Jean.
Presenters will include Tyra Banks, Glenn Close, Harry Connick Jr., Rosario Dawson, LL Cool J, Kyra Sedgwick and Jimmy Smits.
The CNN Heroes:
• 18 viewer-nominated CNN Heroes finalists selected from more than 7,000 names submitted by viewers in 80 countries;
• Viewers' Choice: The most popular CNN Hero profiled on air and online between May 1 and September 30, as chosen in a poll conducted on CNN.com;
• Everyday Superheroes: Three remarkable people recognized by CNN for their spontaneous acts of courage in the face of danger: Wesley Autrey, who jumped onto New York subway tracks to save the life of a student; Zach Petkewicz, who helped prevent a shooter from killing a classroom of students at Virginia Tech; and John Smeaton, a baggage handler who thwarted a terrorist attack at Glasgow Airport in Scotland.
• Mary J. Blige: Grammy-winning "Queen of Hip-Hop Soul" will give her first live performance of a song from her forthcoming new album "Growing Pains;"
• Sheryl Crow: Singer/songwriter previews her 2008 album "Detours" with a live performance of one of her new songs;
• Wyclef Jean and Norah Jones: Duet and first-ever live performance of a new track from Jean's new album, "Carnival II: Memoirs of an Immigrant, to be released December 4.
• Tyra Banks: Supermodel, actor and host of the daytime talk show, The Tyra Banks Show;
• Harry Connick Jr.: Musician, singer and actor, heavily involved in efforts to rebuild his hometown of New Orleans after Katrina;
• Glenn Close: Academy Award nominee and star of the hit TV series "Damages;"
• Rosario Dawson: Activist, actresss, and star of this year's cult hit "Grindhouse;"
• LL Cool J: Hip-hop legend, TV and movie star, expected to release a new album early in 2008;
• Kyra Sedgwick: Emmy-nominated and Golden Globe-winning star of hit TV series "The Closer;"
• Jimmy Smits: Golden Globe and Emmy Award-winning actor and star of the CBS drama "Cane."
Peabody winner producing gala
Joel Gallen, who has helmed ambitious telethon events supporting victims of both the September 11 terrorist attacks and Hurricane Katrina, serves as executive producer for the December 6 event.
Gallen won a Peabody Award for "America: A Tribute to Heroes" and has been nominated for several Emmys throughout his career.
From May 1 through September 30, CNN has featured everyday heroes across its television networks, digital services and at CNN.com/Heroes, encouraging viewers to submit and nominate local heroes they deem deserving of recognition.
In its first year, the CNN Heroes initiative received more than 7,000 nominations from viewers in 80 countries. More than 90 countries were represented among the nominees.
For the December 6 gala, honorees will be named in the following categories: Defending the Planet, Fighting for Justice, Community Crusader, Medical Marvel, Championing Children and Young Wonder. E-mail to a friend