
  "It was a sea of beautiful voices," laughs Grohl, recalling the surreal union that led to the "heavy, dark, Sabbath meets Pink Floyd" track. "The guy from Boyz II Men really raised the fucking bar on this record. It sounds strange but I swear to god, he came in and pushed us to do better."
  Such are the lofty altitudes in which the Foo Fighters currently orbit. Having opted to record with Greg Kurstin of Californian synth pop duo The Bird And The Bee and producer to the likes of Sia and Adele, the six-piece (keyboardist Rami Jaffee is now an official member of the band) began recording 11 songs that rejected the lyrical parameters restricting Sonic Highways' geographically-themed, "city bungee jumps" in 2014. "We went into a studio and made a fucking record," says Grohl, succinctly. A four-month encampment in LA's EastWest Studios began in December and drew vocal cameos from several fellow resident artists, including Alison Mosshart of The Kills.
  "But Adele's not on this record," says Grohl, dispelling a recently popular online myth. "There are names we're keeping secret, though. If you can figure out the mystery of who, then I'll send you a fucking lollipop."
  Locating the potential presence of Muse and Justin Timberlake -both in attendance at EastWest during Grohl's residency-proves tricky. But with repeated listens, Concrete And Gold soon reveals it self as an album that blends honeyed, multi-layered vocal hooks with "super heavy riffs", working to a production MO that connects with Grohl's sonic sweet spot. "My early love of '70s AM Gold and AC/DC, Aerosmith, and hard rock," he says.

  Despite Grohl's aims of recording in a more straightforward fashion, it wouldn't be a Foo Fighters project without a little stab at some overly ambitious endeavour. "I'm a hyperactive musician," he states, though, even by his standards, the briefly considered "Hollywood Bowl Project" - several live recording sessions held in front of an audience of thousands at the famous LA amphitheater - seemed too much. "When I came up with that concept the band looked at me and said, 'Are you out of your fucking mind?' I was really excited. Then I saw PJ Harvey had done something similar [on 2016's The Hope Six Demolition Project] and she'd do it a fucking million times better."
  Their dramatic aims might have been briefly tempered, but if it can produce a record as satisfying as Concrete And Gold, who cares? Words: Matt Allen     Pics: Samon Rajabnik