AC/DC's Brian Johnson is starting to talk about how difficult it was making the band's new album without founding member Malcolm Young.

In the latest issue of Classic Rock magazine Johnson said "we missed Malcolm obviously." He added that working with Stevie - Malcolm and Angus' nephew - was "magnificent" but "when you're recording with this thing hanging over you and your work mate isn't well, it's difficult."

Last week, AC/DC announced their new album "Rock or Bust" - their first since 2008 - will be released in December.

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