Posting a few suggestive tweets over the past week stating “Dec. 11th,” Willow Smith has finally released her debut album ARDIPITHECUS, named after the first hominid bones found on Earth.

The alternative project, which arrives via Roc Nation, clocks in at an ample 15 tracks, featuring the previously released “Why Don’t You Cry” and “F Q–C #8,” the companion to “F Q–C #7” that she put out in April.

“I can’t express how relieved I am to finally give my LightEaters my most recent inner excavation,” said Willow. “This is just the beginning.”

ARDIPITHECUS follows last year’s 3 EP, which dropped on her 14th birthday. The three-track release marked a stylistic pivot for the 15-year-old, who embraced more challenging, abstract fare than on previous singles like “Whip My Hair” and “Fireball,” which featured Nicki Minaj. She was initially supposed to release her debut album Knees and Elbows back in 2012, but it failed to materialize.