The global band hrtz.wav held their debut stage on the 9th on Mnet's 'M Countdown,' showcasing their title track "NINETEEN" and their self-composed song "Eoriberry" for the first time on broadcast.

Kakao Entertainment announced that hrtz.wav revealed the performances of the title track "NINETEEN" and the album track "Eoriberry" from their first mini-album The First Wave on that day. Members Yoon Youngjun (keyboard), Lian (vocal), Dane (bass), Kayten (guitar), and Hagiwa (drums) expressed the narrative of youth in a three-dimensional way through their individual personalities and ensemble.

After their team formation stage on 'M Countdown' last January, hrtz.wav officially debuted by returning to the same stage about three months later. Their teamwork and live performance have been evaluated to have been significantly strengthened during the preparation period.

The first mini-album The First Wave signifies the five members coming together at different frequencies to create the first wave, expressing various emotions such as the excitement and confusion of youth, love, and parting through the band's unique sound. All members participated in writing the lyrics for the title track "NINETEEN," which was produced by GALACTIKA. The track "Eoriberry" was composed directly by Lian and Dane, characterized by its lively and dreamy atmosphere. In addition, the album includes a total of six songs: "Dream," "Highlight," "I AM SO FINE," and "Close To Me."

Starting with 'M Countdown,' hrtz.wav plans to continue their debut activities through various music shows and content.