"Baby" is taken from Clean Bandit's forthcoming album What Is Love?, which will also feature Tove Styrke, Craig David, Rita Ora, ALMA, Charli XCX and more.
The new single sees Marina take the lead on vocals, with help from Luis Fonsi, who has gone on to collaborate with Stefflon Don and Demi Lovato after his number one hit "Despacito".
Clean Bandit released a single with Diamandis last year called "Disconnect".
Over summer Marina Diamandis has been teasing new material, giving fans handwritten updates and even revealing in an interview that she's "been writing more than I ever have before."
Diamandis' fourth album will follow on from 2015's FROOT.
