FOO FIGHTERS MAIN MAN DAVE GROHL REVEALED IN AN INTERVIEW WITH BBC ONE THAT THE BAND’S JUST-ANNOUNCED NEW ALBUM, CONCRETE AND GOLD, WILL FEATURE A “BUNCH OF GUESTS,” INCLUDING SOME “THAT WILL REALLY SURPRISE YOU.” PRESSED FURTHER, GROHL ADDED, “THERE’S ONE WHO IS PROBABLY THE BIGGEST POP STAR IN THE WORLD AND — I’M NOT KIDDING — SINGS BACKUP ON ONE OF THE HEAVIEST SONGS ON THE RECORD AND WE’RE NOT TELLING ANYBODY WHO IT IS.” FANS HAVE BEEN SPECULATING ONLINE WHO THE “BIGGEST POP STAR” COULD BE, WITH MOST AGREEING ON ADELE. THE BRITISH SUPERSTAR HAS CLOSE TIES WITH PRODUCER GREG KURSTIN, WHO HAS NOT ONLY PRODUCED HER MUSIC BUT WAS BEHIND THE BOARD FOR CONCRETE AND GOLD. CONCRETE AND GOLD WILL ARRIVE ON SEPTEMBER 15TH. THE FIRST SINGLE AND VIDEO, CALLED “RUN,” IS OUT NOW.