THE future of Australian rock ban AC/DC is up in the air after frontman Brian Johnson has been told by his doctors to stop touring immediately, as he is running the risk of "total hearing loss".
As a result, AC/DC has postponed the remainder of its US tour, including an April 4 performance at the iconic Madison Square Garden.
A statement on the band's website says the remaining 10 shows will be rescheduled later in the year, "likely with a guest vocalist".
The band was on tour in support of its 2014 album, Rock or Bust.
It is still unclear whether the band will go ahead with the European leg of its tour - scheduled to begin on May 7 in Lisbon.
Englishman Johnson has been AC/DC's singer since 1980, when he joined following the death of Bon Scott.
His first album with the group, Back in Black, became the second best-selling album worldwide, behind Michael Jackson's Thriller.
With his trademark cap, Johnson is a proven fan favourite for his goodwill and for incredible voice.
The latest setback follows a troubling couple of years for the band. In September 2014, the group's founder Malcolm Young had to leave the group owing to the onset of dementia.
In November 2014, Phil Rudd - the group's drummer for 40 years - was forced to leave the group after being charged with attempting to procure a murder and threatening to kill, as well as possession of drugs.
In July last year he pleaded guilty to the drugs charges and one count of threatening to kill and was sentenced to eight months' home detention. He has said he plans to rejoin the band.
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