Grammy performers: Taylor Swift, BTS, Cardi B, Billie Eilish

FILE - In this Oct. 5, 2019 photo, Billie Eilish performs during the first weekend of the Austin City Limits Music Festival in Zilker Park in Austin, Texas. Eilish will perform at this month's Grammy Awards. (Photo by Jack Plunkett/Invision/AP, File)

FILE - Bad Bunny performs a medley at the Billboard Latin Music Awards in Las Vegas on April 25, 2019. Bad Bunny will perform at this month's Grammy Awards. (Photo by Eric Jamison/Invision/AP, File)

FILE - Taylor Swift attends the premiere of "Taylor Swift: Miss Americana" during the 2020 Sundance Film Festival in Park City, Utah on Jan. 23, 2020. Swift will perform at this month's Grammy Awards. (Photo by Charles Sykes/Invision/AP, File)

FILE - Cardi B performs during the Power 99 Powerhouse 2016 in Philadelphia on Oct. 28, 2016. Cardi B will perform at this month's Grammy Awards. (Photo by Owen Sweeney/Invision/AP, File)

FILE - BTS arrives at the 62nd annual Grammy Awards in Los Angeles on Jan. 26, 2020. The popular band will perfrom at this month's Grammy Awards. (Photo by Jordan Strauss/Invision/AP, File)