The trio will preside when the awards show airs Sunday from the Beverly Hilton hotel in Beverly Hills, Calif.
In addition, Hammer, host of HLN's "Showbiz Tonight," will emcee the network's red-carpet special.
Meade, host of HLN's "Morning Express" and a country-music recording artist, will sing both best song nominees: "This Day" by Sheryl Crow (for "Katie") and "Good Afternoon" by Little Big Town (for "Good Afternoon America").
Scheduled presenters on the broadcast include Kathy Griffin, Rachael Ray, Dr. Drew Pinsky, Erica Slezak and the ladies of "The Talk."
Others include Steve Harvey, Betty White, Wayne Brady and Alex Trebek.
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