Back in Black  is the seventh studio album by Australian rock band AC/DC.  Produced by Robert John “Mutt” Lange, the album was released on 25 July 1980 via Albert Productions and Atlantic Records.  They had previously paired with producer Lange in 1978, recording their international breakthrough hit album Highway to Hell.  Back in Black was the band’s first album featuring vocalist Brian Johnson, who replaced Bon Scott after the latter had died back in February of that same year, shortly before the band actually started recording the album.  The album’s all-black cover was designed as a “sign of mourning” for Scott.  As their sixth international studio release, Back in Black was an unprecedented success.  It has sold an estimated 50 million copies worldwide.  Its enormous sales figures have made it one of the best-selling albums in music history.  (More from Wikipedia)