Elton John was forced to cancel a performance at Hyde Park this weekend due to being diagnosed with appendicitis.

The 66-year-old “Tiny Dancer” singer is scheduled to have surgery within the next couple of weeks in the UK.

The Mirror reports that he also has to postpone his European tour.

“Following a number of exploratory scans and blood tests with his medical team in the UK, a diagnosis of appendix abscess surrounding retrocaecal appendicitis has been confirmed," his rep said in a statement.

"Sir Elton is currently undergoing a course of intensive antibiotics and is expected to undergo surgery in the UK in the coming weeks, once doctors can be confident they have sufficiently reduced toxins within the inflamed appendicitis site."

John had performances in Italy in Germany scheduled even before his headlining performance at the Barclaycard British Sumemrtime Festival this weekend.

His rep said he is “incredibly disappointed to postpone these tour dates,” Reuters reports. He will resume with the iTunes Festival in London in September.

image: NBC