Rapper will.i.am has scored his 10th number one in the U.K. singles chart with It's My Birthday.
The Black Eyed Peas star's new song, featuring Cody Wise, has shot to the top of the countdown, knocking Ariana Grande's Problem into second place.
Coming in at number three is Ella Henderson's Ghost, while The Vamps' Somebody To You and George Ezra's Budapest round out the top five, in fourth and fifth place, respectively.
Meanwhile, in the U.K. albums chart, Ed Sheeran's X holds on to the number one spot for the third week in a row.
Manic Street Preachers' Futurology is new at two, followed by Dolly Parton's Blue Smoke at three.
Sam Smith's In The Lonely Hour and George Ezra's Wanted On Voyage place fourth and fifth on the charts, respectively.
Perry performed 'Rise' and 'Roar' before Clinton accepted the nomination to be the Democrats' presidential candidate.
Bruce Springsteen will release rare tracks from 1966 in new album 'Chapter and Verse', which will accompany his autobiography 'Born To Run'.
There's still no reunion planned though.
Not broadcast in its entirety since 1967, a full restoration will be played in select cinemas to support Ron Howard's 'Eight Days a Week' touring...