Led Zeppelin 's was engineer on several classic albums . Guns , called Johns `` amazing . '' He worked on Andy Johns `` 1 of the great engineer/producers of our time , '' tweeted Slash , '' Rolling Stones ' `` Led Zeppelin IV `` Exile on Main Street '' .
Led Zeppelin 's was engineer on several classic albums . He worked on Andy Johns `` 1 of the great engineer/producers of our time , '' tweeted Slash , '' Rolling Stones ' `` Led Zeppelin IV `` Exile on Main Street '' .