One, two, three.

She might be in spasm.

Yeah.

The footage is terrifying, but it shows what a full-blown seizure is like for Celine.

Squeeze Brian's hand if you can.

That's a girl.

Good job, boss.

Good.

So she's still with us. The singer, with tears in her eyes, is unable to move as she moans in agony.

Ah, ah, ah, ah.

The heartbreaking scene goes on for almost eight minutes.

Celine's sports medicine therapist treats her symptoms with a value and two doses of a benzodiazepine nasal spray.

A few minutes later, she's okay and sitting up. So, what caused the attack?

The sun will rise again.

Well, just minutes before, Celine was in the studio and thrilled with her progress.

Your brain was just overstimulated, and I wasn't sure if she was going to survive it.

The director of the new doc, I Am Celine, which dropped today on Prime Video, told the Today Show watching and filming Celine's seizure was the most uncomfortable she's ever felt.

I didn't know what was happening, and I had this uncertainty whether to keep filming or not.

But she gave me the strength to keep going.

I won't stop.