In an interview Thursday, Davis said Cyrus will perform at his annual party, as will four-time Grammy nominee Lorde.
The 81-year-old music executive also teased a surprise performance by a music legend.
Jennifer Hudson will debut her new single, "I Can't Describe (the Way I Feel)," alongside collaborators T.I. and Pharrell Williams during Saturday's soiree at the Beverly Hilton.
Hudson called the experience "a dream," but acknowledged that she's nervous to perform for the A-list crowd.
The Grammy Awards will air live Sunday on CBS from the Staples Center in Los Angeles.
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