The Who have been forced to postpone all 50 dates on their North American tour because frontman Roger Daltrey has viral meningitis.
The British band had already delayed the first four concerts of their anniversary tour The Who Hits 50! because the singer, 71, had contracted a mystery virus.
They have now announced that the rest of the dates have been called off until Daltrey is feeling better.
A statement on The Who's website said: "The band apologise to fans and realise that the postponement will cause an inconvenience for ticketholders.
"It wasn't a decision taken lightly - The Who always give their fans 100 per cent and were never going to compromise the show, but ultimately the band had no alternative but to postpone the tour."
Daltrey said he was especially disappointed as he would also have to miss the Teen Cancer America benefit in Los Angeles, for the US version of the Teenage Cancer Trust charity, of which he is a founder.
He revealed: "For the last four weeks, I have been in and out of the hospital and have been diagnosed with viral meningitis.
"I am now on the mend and feeling a lot better but I am going to need a considerable time to recover. The doctors tell me I will make a complete recovery, but that I should not do any touring this year."
Bandmate Pete Townshend added: "We are rescheduling all the shows for next spring 2016.
"Once Roger is completely well we will come back stronger than ever and Roger and I will give you all a show to remember."
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