Jan. 9, 2012 -- Jay-Z and Beyonce suffered at least one miscarriage before the birth of their daughter, Blue Ivy Carter.
In a new song posted on his website today, Jay-Z raps about the couple's pregnancy struggles: "False alarms and false starts, all made better by the sound of your heart." He later adds, "last time the miscarriage was so tragic."
"Glory feat. B.I.C." also reveals where the daughter of the music icons was conceived -- "You was made in Paris," Jay-Z raps -- and features the crying of a baby, presumably Blue Ivy.
Jay-Z also riffs on her name in the song, rapping "Baby I paint the sky blue, my greatest creation was you" and "The most beautifulest thing in this world, she's daddy's little girl." He posted the track along with a photo of the Empire State Building lit up in blue.
The couple released their first official statement about Blue Ivy today, saying her "birth was emotional and extremely peaceful, we are in heaven." They added that she was "delivered naturally," weighed seven pounds, and described her arrival as "the best experience of both of our lives."
While Blue Ivy might seem like one of the more outlandish celebrity baby names in recent memory, for Beyonce and Jay-Z, it makes a lot of sense.
Jay-Z's dropped three albums with "blue" in their titles: "The Blueprint," "The Blueprint 2: The Gift & The Curse," and "The Blueprint 3." He's also penned songs that pay homage to the color, like "Blue Magic" and "Empire State of Mind" in which he raps, "You should know I bleed blue."
He's often seen wearing a New York Yankees hat, which is, of course, blue.
And "Ivy?" People magazine reports that it's a derivitive of the Roman numeral IV and the number 4, which factors prominently in the couple's relationship.
Beyonce's birthday is Sept. 4, Jay-Z's is Dec. 4 (He also named a song "December 4th"). They married on April 4, 2008 and reportedly have matching "IV" tattoos on their wedding fingers. The name of Beyonce's latest album: "4."
The two-day old baby girl has one thing her parents shed long ago, though -- a surname. "'Blue Ivy Carter' is the ONLY one in that family with a last name," Questo, the drummer of The Roots, tweeted today, citing "Late Night with Jimmy Fallon" writer Mike DiCenzo. Sean Carter and Beyonce Knowles effectively left theirs behind when they ascended to super stardom.
Nicknames are already in the works. Rihanna called Blue Ivy "princess carter" in a congratulatory tweet over the weekend, while Solange Knowles, Beyonce's sister, simply dubbed her "The most beautiful girl in the world."
Beyonce coyly revealed that she and Jay-Z were expecting their first child, showing off her growing belly in a flowing Lanvin gown at MTV's Video Music Awards in August.