The show, set to air Dec. 4 on CBS, was taping at the Kodak Theatre in on Thursday. Will.i.am was filling in for West, said Hillary Siskind, publicist for the Black Eyed Peas frontman.
Thewere scheduled to make their debut reunion performance on the show.
West's mother, Donda West, 58, died Saturday night at Centinela Freeman Regional Medical Center inafter she stopped breathing. She had undergone cosmetic surgery Friday in Los Angeles and had gone home.
An autopsy was conducted, but an official cause of death won't be made for at least 1 1/2 months, pending further tests, the coroner's office has said.