CHRISTINA AGUILERA, SAMARA JOY, LENNY KRAVITZ, MALUMA, LIONEL RICHIE, MARK RONSON, MERYL STREEP, TAYLOR TOMLINSON, OPRAH WINFREY, AND OTHER SURPRISE GUESTS TO PRESENT AT THE 66TH ANNUAL GRAMMY AWARDS® U2 (pictured above), Billy Joel, SZA and Billie Eilish among performers! MUSIC'S BIGGEST NIGHT® AI...