Sir Elton John has said he was "deeply upset and sorry" for cutting short a concert in New Zealand after being diagnosed with walking pneumonia.
The music star, 72, was performing at Auckland's Mount Smart Stadium on Sunday when he lost his voice and broke down in tears on stage.
In footage shared by fans on social media, Sir Elton is seen crying as he is escorted from the stage while thousands of concert-goers give him a standing ovation.
Sir Elton posted on Instagram a short while later: "I want to thank everyone who attended tonight's gig in Auckland.
"I was diagnosed with walking pneumonia earlier today, but I was determined to give you the best show humanly possible.
"I played and sang my heart out, until my voice could sing no more.
"I'm disappointed, deeply upset and sorry. I gave it all I had.
"Thank-you so much for your extraordinary support and all the love you showed me during tonight's performance. I am eternally grateful. Love, Elton xx."
He shared a picture of himself accompanied on the stage by a member of the crew.
According to one fan on social media, Sir Elton had told the audience earlier in the show: "My voice has completely gone, I'm so sorry."
He was tended to by a medic for around five minutes earlier in the set and continued to play before he was forced to stop completely.
Following his departure from the stage, one fan tweeted: "Sir Elton John – you gave it everything you had – so sad you had to finish your concert in Auckland an hour early after your voice gave out.
"Hope you feel better soon."
The Princess of Wales is greeted by singer Elton John for the charity premiere of the musical 'Tango Argentina' at the Aldwych Theatre, London, in aid of National Aids Trust and Aids Crisis Trust.
Paul McCartney and wife Linda from the band Wings show off their award for Best Single along with Elton John (c) who won the Best Male Singer and Best Concert Awards.
Elton John live in concert in London, circa 1976.
Elton John live in concert in London, circa 1975.
Musician Elton John sings in to the microphone on stage during a gig.
Elton John signs copies of his new album, 'Don't Shoot Me I'm Only The Piano Player' at the Noel Edmonds's Record Shop, Chelsea.
Elton John live in concert at Wembley Stadium in May 1974.
Rock star Elton John performing on stage at Wembley Stadium, Londpn
Bespectacled pop star Elton John and television personality David Frost being presented to the Queen at Windsor when they were among a host of stars appearing in a gala variety performance in the Big Top at Home Park in aid of the Queen's Silver Jubilee Appeal.
British pop singer Elton John (right), Lana Hamilton (second left), wife of actor George Hamilton, and rock singer Rod Stewart (left) at New York's Studio 54, to celebrate at a party given by RCA Records, who signed John to a contract with the recording company.
1982: Chairman Elton John leads his first team squad in a song at Vicarage Road as Watford get ready for their first 1st Division clash against Everton on Saturday at home. The club announced a 400,000 sponsorship deal with truck and bus giants Iveco.
The Ruritanian look for the pop singer Elton John, showing his new uniform in London, that will be his hallmark for his British tour.
File photo dated 19-05-1984 of Watford Chairman Elton John on the pitch before the match
Pop singer Elton John
The Prince of Wales shakes hands with Elton John, flanked by his drummer Ray Cooper (l) and Dire Strait's bassist John Illsley (centre) before tonight's rock extravaganza at Wembley to celebrate 10 years of the Prince's Trust.
Pop star Elton John, left, who sold his controlling interest in Watford FC to Robert Maxwell for �2 million, joins the publishing tycoon in the stands at Oxford.
1989: Pop star Elton John (left) and Bob Geldof at a BBC photocall in London . Elton is one of the singers who will be seen taking part in 'Our Common Future', an hour long programme of recorded musical highlights of the Planet-Aid global concert staged in New York. Geldof will be introducing the concert. CELEBRITY
1991: Elton John (r) meet actress Elizabeth Taylor and her husband, Larry Fortensky, at a Gala reception for the Aids Trust which was attended by Princess Margaret.
1991: Newly married actress Elizabeth Taylor with her husband, Larry Fortensky (2nd l), actor Michael Caine and pop star Elton John (r) at a charity reopening of the refurbished Mirabelle restaurant in London's Mayfair.
Watford President Elton John greets Graham Taylor at Vicarage Road today (Thursday) as he arrives to take up his new job as General Manager/PA. Elton John is back at the helm of division two Watford after heading a consortium of investors to take over at Vicarage Road from Jack Petchey, it was announced on 26.4.97. The multi-millionaire will now chair both the new board and a holding company which now owns the club. The former England manager Graham Taylor, who has been influential in bringing John back to Vicarage Road, will also remain a pivotal figure at the club as general manager.
PARIS : 19/1/97 : ELTON JOHN AND DAVID FURNISH AT THE THEATRE NATIONAL IN PARIS AFTER THE PERFORMANCE OF "LE PRESBYTERE N'A RIEN PERDU SON CHARME NI LE JARDIN DE SON ECLAT". PA NEWS PHOTO BY DAVE CHESKIN.
Rock legend Elton John at the Royal Academy of Music in London where he received an honorary membership today (Wednesday). The singer-songwriter, who has sold 150 million records, joined the exclusive club of eminent musicians, whose 250 members include conductor Bernard Haitink and tenor Jose Carreras. Photo by Stefan Rousseau/PA. Watch for PA story SHOWBIZ Elton.
PEOPLE ROTOR PIC PIC MIKE MALONY................06.09.97 DIANA PRINCESS OF WALES FUNERAL............. WESTMINSTER ABBEY.............. ELTON JOHN AFTER HIS TRIBUTE TO DIANA
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Sir Elton is due to perform two more concerts in Auckland on Tuesday and Thursday as part of his last ever tour, Farewell Yellow Brick Road.
According to the American Lung Association, walking pneumonia is a "non-medical term for a mild case of pneumonia".
Generally called atypical pneumonia, it can be caused by bacteria or viruses and symptoms, including a cough, fever, chest pain, mild chills and a headache, are similar to that of a bad cold.
Symptoms are usually mild enough for a sufferer to be able to continue their daily activities.
Sir Elton's Auckland show came less than a week after he won an Oscar along with his long-time writing partner Bernie Taupin for best original song for their Rocketman track (I'm Gonna) Love Me Again.