Elton John has pneumonia, and it’s unclear if he’ll continue what he says is his final world tour. “I played and sang my heart out, until my voice could sing no more,” he said in a tweet. “I’m disappointed, deeply upset and sorry. I gave it all I had.” John, 72, abruptly left the stage during Sunday’s concert in Auckland and returned minutes later for two more songs before saying, “I’ve just completely lost my voice.