Rock band The Who abandoned a US concert after just one song because lead singer Roger Daltrey was ill.
This is the band's first major tour in 20 years
Guitarist Pete Townshend told the audience in Tampa, Florida, that Daltrey could not continue as he was suffering from suspected bronchitis.
Townshend said: "I just talked to Roger and he can barely speak. I tried to get him to come out here, but he's really, really sick."
The concert has now been rescheduled for 25 March.
The Who's world tour comes to Europe later in the spring and they will play dates in the UK in May and June.
They have already played almost 50 venues in the US and Canada since the tour started in September.