Katy Perry leads this week’s new single releases with her long-awaited fourth album leader Chained to the Rhythm.

The track, reportedly written by Sia and produced by hitmaker Max Martin, follows last year’s US Olympics theme song Rise. Her last proper single was 2014’s Number 33-peaking This Is How We Do.

MORE: Katy Perry’s biggest songs and albums in the UK revealed

Elsewhere, Scottish band Texas return with Let’s Work It Out, the first taster of their upcoming tenth album Jump On Board, and disco collective Hercules and Love Affair return with a new song called The Feast of the Broken Heart.

Big albums out this week include Human by BRITs Critics’ Choice winner Rag’n’Bone Man, the debut album from The Saturdays’ singer Una Healy, called Waiting Game, and the Fifty Shades Darker soundtrack, featuring brand new songs from Sia, Tove Lo, Nicki Minaj, Kygo and Taylor Swift and Zayn Malik’s I Don’t Wanna Live Forver.