After meeting five years ago at Denmark's Roskilde festival, uber-cool producer (and one half of Gnarls Barkley) Danger Mouse and Shins guitarist James Mercer have been quietly - and secretly - working on a record together. Now they're ready to unveil their project Broken Bells, we get a rare interview with Mercer and the notoriously publicity shy Danger Mouse (aka Brian Burton, and whose production credits also include Beck and Gorillaz). Plus a roundup of the week's biggest music news - with Matt Everitt and Julie Cullen.