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.
Ariana Grande fires back at Tekashi after he accuses her of buying her way to the top of the charts
Ariana Grande and Justin Bieber’s new duet has stormed the top of the US pop charts and Stuck With U has debuted at number one on..
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