Bruno Mars, Ariana Grande, Camila Cabello, Ed Sheeran, Taylor Swift also earned multiple nods
"I hope he never sees it," Calvin the Second says of Childish Gambino video
Donald Glover's musical alter ego also debuts new song "Saturday" on 'SNL'
Miley Cyrus will host event slated to air in August
Grammy nominees past and present break down six big categories
