Until now, not much has been known about what happened aboard Prince private jet the night it was forced to make a medical emergency landing in Illinois late on the night of April 15.

Singer and Prince protégée Judith Hill has come forward with a firsthand account of what happened on the singer’s private jet that night on the way back from Atlanta to Minneapolis.

Hill, a Grammy-winning singer, had spent the last two years performing with him and had become part of his inner circle.

Hill says she summoned Prince’s friend and assistant Kirk Johnson from the front of the plane and together, they tried but failed to wake him.

“We knew it was only a matter of time; we had to get down,” Ms. Hill recalled.

Approximately 20 minutes later, he was transported to Trinity Moline Hospital, and by the time Hill caught up with him, he was alert and talking, “Which was such a relief to me, because I thought he was gone.” The episode marked the first time she’d ever seen him in distress.

Hill, who attended the private memorial service at Paisley Park the weekend after his death, says she’s only begun to realize how much she’d come to depend on his counsel.