At 23, Sinéad O’Connor had the number one song in the world. She gained international attention with her rendition of Prince’s song “Nothing Compares 2 U,” and was performing for crowds and on late night talk shows.

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But the Irish singer tells Dr. Phil in an exclusive interview that she felt like an “impostor.”

“I couldn’t understand why people liked my songs, the songs I wrote. That was a Prince song, so of course, I thought, well that’s great. It’s a Prince song, of course everybody loves it. But I felt like the impostor that people loved the album. That’s what was shocking to me,” she says on Tuesday’s episode. “I’d be doing the gigs, and I’d be singing my songs, and the people would go mental, and I’d be thinking, why are they all going mental, and I’m just a complete [expletive].

WATCH: The Heartbreaking Reason Sinéad O’Connor Says She Keeps Her Head Shaved

On Tuesday’s episode, hear more from O’Connor when she opens up about her childhood, her rise to fame and what her life has been like recently. Check here to see where you can watch.

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