On April 3, RIIZE released the full version of their pre-debut song “Siren” as a surprise gift to fans before their upcoming comeback, a mini-album set to be shared sometime in June. “Siren” was originally a one-minute-long performance single that wasn’t officially released on streaming platforms or on a physical album.

The song became so popular due to the intense choreography that really showcased the members’ dancing abilities that SM Entertainment decided to release it as a whole song. That’s why it’s kicking off the comeback promotions schedule for RIIZE, to be followed by prologue single “Impossible” being released on April 18 and three B-sides revealed on April 29.

Along with the full version of “Siren” being released, RIIZE also posted a dance practice video of the song. While the original choreography looked exhausting enough on its own, the longer version is nothing short of awe-inspiring as the members put all their energy into performing the intense, complex dance.

The comments section of the YouTube video shows just how much fans are amazed by the members’ stamina and skills.

A forum post about the dance practice video showed similar sentiments in the comments section.

We’re sure this is just the beginning of an exciting and entertaining promotions schedule for the talented rookie group!

 Even professional dancers are impressed!