AC/DC fans knew that Guns N’ Roses frontman Axl Rose would replace lead singer Brian Johnson on the band’s “Rock or Bust” world tour But today, Johnson spoke out about his hearing loss Johnson, who joined AC/DC in 1980 after the death of original singer Bon Scott said he was having trouble hearing the guitars and other musicians on stage His doctors advised him not to perform in loud stadiums or arenas for now but Johnson said he has no plans to leave the music industry permanently