Bootylicious singer Beyoncé kept the recording of her upcoming album, “B’Day,” a secret -- even from her father and manager, Matthew Knowles.

As the former Destiny's Child tells Giant magazine, however, she had her personal reasons.

"It took awhile for me and my dad to have an understanding," she said in excerpts from the interview on MTV.com. "When I turned 18 and started handling my business more, he went into shock. And we had our issues."

Among them, Beyoncé said, "I'd say 'No' to something, and he'd book it anyway. Then I'd have to do it because I'd look bad (if I didn't)."

Admitting she and her father "would fight sometimes," the singer said that it "took about two years, to when I was 20, for him to realize, 'Oh, she is an adult now, and if she doesn't want to do something, I can't make her do it.'”

Knowles, who's usually mum about boyfriend Jay-Z, also commented about their relationship, saying, "It's very easy. He's so quick. And we respect each other. If I have any suggestions he respects it. If he has any suggestions, I respect it. It's just, I don't know, easy. And fun."

Knowles is set to release her new album “B’Day” appropriately on her 25th birthday. The new album's first single, "Deja Vu," features her main man Jay-Z.