AC/DC’s former drummer Phil Rudd commented on Axl Rose’s singing for AC/DC in interview by Music Radar. As you know, Phil was play in AC/DC between 1975-1983 and 1994-2015. 

He said:

“I watched some clips the other day of Axl singing with the boys. I was surprised; it wasn’t too bad. I was quite surprised, I thought he did quite well – and that’s not an easy gig, mate, it’s not an easy gig at all. AC/DC is a tough gig for everyone in the band.

I saw Angus jamming with Guns N’ Roses as well. Apart from watching those clips though I don’t know what’s going to happen or what’s going on with the band.”