DAY6 has also released a video of the album sampler. 

The video uploaded on Tuesday features tracks from 11 tracks on its third full-length album "The Book Of Us: Entropy." The title track "Sweet Chaos" has the fastest BPM ever performed by DAY6, boasting an intense song atmosphere. 

The song is sung by putting on a strong beat while at the same time singing with full emotions that show how a person is confused by life because of sweet love. The more you look at it, the more you see it, the more you listen to it, the more you feel about it. 

In track four, "Rescue Me," she cries out for her fateful opponent to save her while wandering through space. The song "365247" is a song that all DAY6 members participated in, conveying their intention to make hot love throughout the year, day and week. 

Through "Not Fine" and "Not Mine" and "Like the Wind Flowing Wind," they talk about the sorrow and anxiety of love that cools down. The DAY6's unusual attempts are also noteworthy. 

He challenged the disco genre with "EMERGENCY," and his reggae-style guitar performance and Bossa nova-style guitar performance have added colour to the album with impressive "Yaya." 

Lastly, the new album sampler will also present DAY6's behind-the-scenes footage from the comeback photo shoot. Meanwhile, DAY6's third full-length album "The Book Of Us: Entropy" will be released on various music sites at 6 p.m. on 22nd. 

At 8 p.m. on the day of its release, 'DAY6 will host 'The Book of Us: Entropy' Showcase' through Naver V LIVE.