She’s a successful singer and a mother to daughter Blue Ivy, but this happy mama hasn’t always had it easy with hubby Jay-Z.

Beyonce recently became the spectacle of a lip-syncing scandal and overcame it at a NFL press conference yesterday by singing live, and now she’s going forward again by opening up about her miscarriage before she had Blue Ivy.

“About two years ago, I was pregnant for the first time,” revealed Beyonce in her HBO documentary Life is But a Dream, which has been viewed in advance by several media outlets including US Magazine.

“And I heard the heartbeat, which was the most beautiful music I ever heard in my life.”

Beyonce did what most mothers do and began picking out names.

“I envisioned what my child would look like,” added Beyonce. “I was feeling very maternal.”

But early into her pregnancy Beyonce lost her baby, but didn’t know it until having a routine doctor’s appointment.

“I flew back to New York to get my checkup—and no heartbeat. Literally the week before I went to the doctor, everything was fine, but there was no heartbeat.”

Being a singer, Beyonce grieved by writing a song.

“I went into the studio and wrote the saddest song I’ve ever written in my life,” said Beyonce. “And it was actually the first song [Glory] I wrote for my album. And it was the best form of therapy for me, because it was the saddest thing I’ve ever been through.”

And while Beyonce has had her ups and downs, she had a definite high when she welcomed Blue Ivy into this world on January 7, 2011. And this Sunday should be another great day for the singer who will be performing live during the Super Bowl. Tune into CBS to watch.

-Ashley Quadros, CBS Local