Alicia Keys and Swizz Beatz welcome second child

Alicia Keys gave birth to son Genesis Ali Dean early on Saturday morning.

It's baby number two for the Grammy-winner and her husband, producer-rapper Swizz Beatz, who are also parents to 4-year-old Egypt Daoud.

The 33-year-old singer shared the news on her Instagram account Sunday with a photo of Genesis's footprints. The image also details that the baby was born at 1:52 a.m. and weighs 6 pounds, 5 ounces.

Keys expressed excitement in her social media captions, saying that "the joy of joy is joy" and that she is grateful.

Keys has been working on a new studio album, which is expected out in 2015. It follows 2012's "Girl on Fire."