CHICAGO — Anyone who’s left so much as a hat on a Chicago Transit Authority train knows that whatever leaves the station without its owner often is gone forever.

Except, apparently, a $22,000 gold and silver flute.

Donald Rabin is once again holding – and playing – the flute left to him by his grandmother that he forgot on a train seat when he hopped off last week in the Logan Square neighborhood.

“I’m just thankful that I have the flute in my hand, that I can make music again and I can make people smile,” said Rabin, a 23-year-old Boston-based flutist.

Rabin was riding a Blue Line train from O’Hare International Airport during a layover before his return to the Berklee College of Music in Boston. When he got off, he realized he’d left behind his flute.

He said he rode the train for hours in hopes of finding the flute. When he came up empty, he reported the missing instrument to police and took to social media to tell people about what happened.

According to the Chicago Tribune, a CNN reporter told Rabin as he was about to fly out of Chicago that there was a comment on Facebook about the flute showing up in a pawnshop, that a homeless man had found it and used it as collateral for a $550 loan.

The pawnshop owner, Gabe Cocanate, was holding onto the flute, trying to determine if it was as valuable as it looked, when he and his wife saw the story of the missing flute on the news.

So when the homeless man returned to the shop, “I go, ‘Listen man, it’s been all over the news. It’s not your flute,’” Coconate told the Chicago Sun-Times.

Police picked up the flute and contacted Rabin, who flew back to Chicago this week, retrieved it and treated officers to a brief concert.

Rabin knew the odds of ever seeing something so valuable ever again. And yet, he said: “For some reason, I knew in my heart and soul it would be found. I knew my grandmother would never leave me.”