NMIXX released a music video teaser for the track "Crescendo" from their 5th mini-album "Heavy Serenade," ahead of the release of the title track of the same name.

The teaser video transitions from a monochrome space that appears to be flipped upside down to a foggy field. It features Seol Yoon blowing breath into his hand and placing it on the ground. Then, when Kyu Jin hammers something connected to his hair, the ground glows and cracks, and as the members share warmth and light up the darkness, an unknown entity is shown moving. The members gather together, pulling a rope, and as they rise one by one, the scene where Seol Yoon touches the ground at the beginning of the video is shown from a different angle, concluding the video.

NMIXX's 5th mini-album includes a total of six tracks: "Crescendo," "Heavy Serenade," "Superior," "IDESERVEIT," "Different Girl," and "LOUD." "Crescendo" is a song that contrasts soft melodies with intense synth and drum sounds, with Lily participating in the lyrics. The title means "gradually stronger" and is derived from the musical term "Crescendo," expressing growing emotions through the lyrics. The full music video for "Crescendo" will be released on the official JYP Entertainment YouTube channel at 6 PM on the 28th.

The title track of this album, "Heavy Serenade," was written by singer-songwriter Han Ro-ro. Additionally, Lily contributed to the lyrics of "Crescendo" and "LOUD," and Bay participated in writing the lyrics for "Different Girl," adding to the group's emotional depth. "Superior" was first performed on the 24th at the eSports festival "LCK Team Roadshow: T1 Homeground" on the eve event "Eve Festa."

Meanwhile, NMIXX will resume their first world tour, "Episode 1: Zero Frontier," starting in June.