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Sweetener, Ariana Grande's fourth studio album, is out.

There's been a big reaction to the 25-year-old's record, which also features Pharrell WIlliams, Nicki Minaj, and Missy Elliott.

It is nearly 18 months since the bombing of her concert at the Manchester Arena, that claimed 22 lives and injured hundreds of other fans.

In previous a interview she said the album was about "bringing light to a situation...".

Here are four things you need to know about the album.

(Image: Ariana Grande in concert. Credit: REUTERS/Mario Anzuoni).