Jennifer Hudson, Kristin Chenoweth Added to Music Mix at Oscars

Christopher Polk/Getty Images

NEW ORLEANS, LA - FEBRUARY 03: A group of 26 students from the Sandy Hook Elementary School in Newtown, Connecticut perform America the Beautiful with singer Jennifer Hudson during the Pepsi Super Bowl XLVII Pregame Show at Mercedes-Benz Superdome on February 3, 2013 in New Orleans, Louisiana. (Photo by Christopher Polk/Getty Images)

Oscar host Seth MacFarlane and Kristin Chenoweth will perform a special closing number, and past winners Jennifer Hudson, Russell Crowe and Catherine Zeta-Jones will join an all-star tribute to recent movie musicals at this Sunday's Academy Awards.

It's all part of an increasingly music-heavy Oscar ceremony, set for Sunday Feb. 24 on ABC.

The planned tribute to movie musicals of the last decade will include songs from some of the genre's biggest hits, including "Chicago," "Dreamgirls" and "Les Misérables." Two of this year's nominees from "Les Mis," Hugh Jackman and Anne Hathaway, will also join in along with Amanda Seyfried and Helena Bonham Carter, among others.

"We are pleased to have been able to amass so much talent to create the celebration of musicals of the last decade that we envisioned," Oscars producers Neil Meron and Craig Zadan said in a statement on Wednesday. "We are thrilled that so many talented actors have agreed to bring our vision to life."

"Les Mis" is up for eight Oscars this year, including best picture and best original song.

Meron and Zadan also announced on Wednesday that MacFarlane, who released an album of standards in 2011, and Tony winner Chenoweth will perform a "special number" after the best picture award has been given.

"We think it will be a 'can't miss' moment," they said.

In all, music is shaping up to play a huge role at this year's ceremony, with Adele, Shirley Bassey, Norah Jones and Barbara Streisand all set to perform.