Its production draws from R&B and dance styles such as UK garage, drum and bass, Baltimore and Jersey club, characterized by lively beats and synthesizers.

All six tracks were accompanied by music videos that were collaborations with brands such as Apple and the Powerpuff Girls, and featured celebrities such as Hoyeon Jung and Tony Leung.

The group later became the fastest K-pop act to reach one billion streams on Spotify, following the release of their commercially successful first single album, OMG, in January 2023.

[1][2][3] The album included the tracks "Ditto" and "OMG", the former of which became the longest-running number-one song on South Korea's Circle Digital Chart and marked the group's first entry on the Billboard Hot 100.

[7] On June 19, 2023, ADOR officially announced the release date for NewJeans' second EP, titled Get Up, and revealed its tracklist which included the lead singles, alongside a snippet of one of the B-side tracks.

Analyzing the musicians' discographies, critic Kim Do-heon noted that they all shared a R&B-based languid bedroom pop production mixed with UK garage.

Used to working as a duo, Stoltenberg and Motzfeldt said that writing with others was initially confusing as they had to direct the production while Jensen and de Casier simultaneously wrote the tracks.

[14] "Compared to our previous releases, this new mini album definitely has a lot more variety to offer, in not just genre of music and dance style, but what we are striving to express and show to you."

[13] Inspired by UK garage and Jersey club,[13] the percussion-driven track expresses NewJeans' desire to keep carving their own path and experimenting with new music, also referencing in the lyrics "So Fresh, So Clean" (2001) by American duo Outkast.

[22][13] "Super Shy" is a bubblegum liquid drum'n'bass and Jersey club song that features a staccato kick drum pattern in which NewJeans wish to overcome their shyness and confess to their first love.

[19] "Cool with You" is a UK garage track driven by "effortless" melodies, "playful" ad-libs,[19] layered harmonies, melismas, and whispered vocals.

[22] The record closes with "ASAP", a "sweet" pop song that incorporates "bubbly" percussion, syncopated synths, and a ticking sound similar to that of a clock as a call-back to the first track.

[28][29] The EP's first single "Super Shy" was made available on streaming platforms and for digital download on July 7, 2023, alongside the B-side track "New Jeans".

The music video for "New Jeans" was directed by Youngeum Lee and created in collaboration with American animated television series The Powerpuff Girls to celebrate its 25th anniversary.

[37] Directed by Shin Hee-won,[14] the music video for "Super Shy" stars NewJeans performing the song across Lisbon, Portugal, in a series of impromptu flash mobs.

Starring NewJeans, actress Hoyeon and actors Micol Vela and Tony Leung, the music video reinterprets the myth of Cupid and Psyche.

[49] On August 11, NewJeans performed "ETA" at the K-pop Super Live concert, which served as the closing ceremony of the 25th World Scout Jamboree.

[51] The group attracted a large crowd despite performing at noon during a heat wave and the organizers had to restrict access to the venue for safety reasons.

[53] Music critic Kim Do-heon deemed it a "historic moment",[54] while Junji Oda of Mikiki called it a "decisive performance" that established "NewJeans' position in Japan and in Asia".

[56] In her five-star review for NME, Rhian Daly praised the six "flawless" songs and wrote that Get Up served as a "divine" introduction to NewJeans' second year, successfully establishing them as "the group to watch" in the K-pop music scene.

[22] Joshua Minsoo Kim of Pitchfork wrote that the group "channel the ecstasy of self-love and infatuation through lively dance music" while their "brisk, club-inflected pop songs cement them as one of the most interesting K-pop acts working today".

[11] Music critic Kim Young-dae called Get Up the "highly refined result of tenacious pursuit of simplicity and intuitive sophistication" that "transcends genres and cultures".