“Bruce Fairbairn produced this one, but he wasn’t supposed to be the producer. What happened was, George Young produced most of it, but he got ill and couldn’t finish. So the band decided to have Bruce and me take it from there.
“Brian Johnson came in to do his vocals, but he was having a tough time because of some of the keys the songs were in. We ended up lowering the keys, which then resulted in Angus and Malcolm [Young] coming in to redo guitar parts. Before I knew it, we were recording songs all over again except for the drum tracks.
“We also did two new songs, which sort of solidified things between me and the band. They were very pleased at the sound I was getting them.
"Mixing AC/DC was pretty fun because I didn’t have to second-guess what they were supposed to sound like: they were supposed to sound like AC/DC.
“When tracking, Angus and Malcolm came in, plugged in and got their sound. Angus always used two or three different Marshall heads.
"For rhythms, he liked a 100-watt Superlead Plexi head, and for leads he used a 45-watt head a lot. Malcolm had a Marshall, but it was a bass head. His guitar was super clean, but because it was going through the bass head it really delivered amazing low-end.”