Ariana Grande, Justin Bieber Top Hot 100, Katy Perry's TV Debut of "Daisies" and More | Billboard News

  • 4 years ago
Ariana Grande and Justin Bieber hit No. 1 on the Billboard Hot 100, Katy Perry debuts "Daisies" on the night an 'Idol' winner is crowned and new releases from Harry Styles and Taylor Swift.