On Wednesday, March 21st, singer Céline Dion announced that she’s canceling her shows in Las Vegas between March 27th and April 18th. The reason? She needs to have surgery. On Facebook, Team Céline shared that she will be undergoing a minimally invasive surgery to fix Patulous Eustachian tube. It’s a condition the singer has been dealing with for the last year or so. You might be wondering: What is Patulous Eustachian tube, exactly? First, let’s understand where the eustachian tube is located and what it does.

“The eustachian tube, which connects your middle ear to the back of your nose and throat, equalizes pressure in your ear,” the Mayo Clinic states. “The air pressure in your middle ear usually is the same as that in your outer ear. When you swallow or yawn, your eustachian tube normally opens and allows air to flow into or out of your middle ear, equalizing the pressure.”

The Eustachian tube is normally closed. But when you’re dealing with Patulous Eustachian tube, it stays open intermittently. And when it does that, noises can sound muffled and you can experience autophony: hearing your own voice, breathing, and heartbeat unusually loudly. As a result, everything sounds echo-y. It’s not an easy thing for anybody to deal with. But it’s especially difficult for a singer, who makes a living on hearing the sound of their own voice.

Dion has been experiencing Patulous Eustachian tube for the last 12-18 months, treating it with ear drops. But now, she’s undergoing surgery to fix the problem.

But don’t worry — Céline at The Colosseum at Caesars Palace is set to resume on May 22nd.

We’re wishing you a speedy recovery, Céline!