Beyonce wrote a song about her miscarriage, but, no, you can't hear it

Beyonce is speaking for the first time about the miscarriage that preceded the birth of her daugher, Blue Ivy Carter. The comments come in "Life Is but a Dream," an HBO documentary on the singer debuting in February, which also includes footage of Blue Ivy's sonogram. Bey says she and husband Jay-Z had picked out names and listened to the baby's heartbeat. They were devastated when they discovered at a routine appointment a week later that the heartbeat was gone. "I went into the studio and wrote the saddest song I've ever written in my life," says Beyonce, who doesn't name the song. "It was the best form of therapy for me." [Source]

Click to see more on msnNOW.com, updated 24 hours a day.