Elton John has joined the lineup for what has now been expanded into a two-hour telecast to raise funds for victims of the South Asian tsunami.

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NBC Universal said the lineup for "Tsunami Aid: A Concert of Hope" -- which already included Madonna, Eric Clapton, Norah Jones, Sheryl Crow, Stevie Wonder, Kenny Chesney, Tom Jones and Gloria Estefan -- has also been expanded to include Nelly and Annie Lennox.

Producers also announced Clint Eastwood, Renée Zellweger, Ray Romano, Ben Affleck and Morgan Freeman will appear on the special, scheduled to air live at 8 p.m. Saturday over NBC and its cable channels.

Halle Berry, Usher, George Clooney, Uma Thurman, Matt Damon, Catherine Zeta-Jones, Michael Douglas, Bruce Willis, Danny DeVito, Tim Robbins, Eric McCormack and Sean Hayes are also scheduled to appear on the show.

NBC Universal is producing the special in collaboration with the American Red Cross.