The pop star's 'top secret' world premiere event airs on HBO April 23
Credit: HBO

Beyoncé dropped a big surprise on Saturday when she announced the debut of some sort of project titled Lemonade on HBO. The “world premiere event” is set to air April 23 at 9 p.m. ET.

While fans need to wait five days until its debut and with speculation running high as to the content of Lemonade, EW has learned a few details about the project.

A source tells EW, “Beyoncé’s super top secret Lemonade is actually a lengthy concept video.”

On Sunday, Beyoncé, who most recently released the epic video for her new single “Formation” in February, dropped an an extended trailer of Lemonade. The one-minute long clip shows footage of Beyoncé, decked out in fur, whispering, “The past and the present merge to meet us here. What are you hiding?” The trailer is inter-spliced with ominous footage of a thunderstorm and Beyoncé wielding a bat as explosions go off in the street.

The pop star’s HBO event comes just days before the launch of her world tour, which kicks off April 27 in Miami.

Watch the extended trailer of Lemonade below.