Watch: The 1975 cover Ariana Grande's 'thank u, next'.

Gearing up for the release of their highly anticipated new album 'A Brief Inquiry Into Online Relationships' (out this Friday!), The 1975 returned to BBC Radio 1's Live Lounge today to perform a cover of Ariana Grande's 'thank u, next', as well as a few of their own new songs - 'It's Not Living (If It's Not With You)', 'TOOTIMETOOTIMETOOTIME', and 'Sincerity Is Scary'.

Watch videos from the Live Lounge session below and listen to 'TOOTIMETOOTIMETOOTIME' live...