Elton John, Fleetwood Mac and Robert Plant have all been forced to postpone tour dates due to illness in recent days.

John was forced to cancel an appearance in Geneva on June 3 after he suffered a throat infection and was ordered by his doctor to cancel the show which has not been rescheduled for this year.

Fleetwood Mac canceled the Birmingham show of their U.K. tour, citing an undisclosed band member's illness.

"We are very sorry to announce that due to illness the concert has been re-scheduled for Tuesday July 7.

All tickets remain valid for the re-scheduled performance. For refunds please visit your point of purchase," the band wrote in a statement.

Meanwhile, Plant canceled shows in Detroit and Toronto earlier this week after being diagnosed with laryngitis.

He explained that he sounded "more like a crooning Kermit than my normal Golden self."

He added, "I'm really disappointed, as I've only missed one gig in 15 years - and now here's two in a row.

It's heartbreaking. I'm furious, frustrated and silent."