Angus Young will soon become the last man left from the original members of AC/DC after their Rock or Bust tour ends next month.

Young admitted at this point he is unsure of the band’s future once the tour concludes on September 29. “At this point, I don’t know. We were committed to finishing the tour. Who knows what I’ll feel after? When you sign on and say, ‘I’m gonna do this and that’, it’s always good to say at the end of it, ‘I’ve done all I said I would do.”

The band had been in so many changes. Young started AC/DC along with the late Bon Scott, bassist Cliff Williams, and Angus’ older brother, Malcolm. Brian Johnson took Scott’s spot, but the vocalist was forced to take a break from touring because of hearing problems. Malcolm was replaced by his nephew Stevie after he was diagnosed with dementia. Drummer Phil Rudd, on the other hand, has been replaced by Chris Slade after he was found guilty on a drug charge.

Williams had already announced that he will retire after the AC/DC’s Rock or Bust world tour. Young said Williams informed the band about him stepping down just before the tour started. He however admitted that Johnson’s condition may have something to do with Williams’ decision to retire. Young explained that the two get along really well because they are in the same age bracket.

Williams announced his decision to stop performing in a recent interview with Gulfshore Life. He said: “Losing Malcolm, the thing with Phil and now with Brian, it’s a changed animal. I feel in my gut it’s the right thing.”

As for Axl Rose filling in for Johnson, Young told the Rolling Stone magazine, the Guns N’ Roses frontman has been really good throughout the tour.

The AC/DC rescheduled dates for the North America leg of their Rock or Bust world tour will kick off in Greensboro, North Carolina on August 27.