The album musically conveys a 1980s-inspired style, incorporating genres including synthpop, hip hop, pop rock and dance-pop.

[4][5] Yeeun was the only member of the group to have considerable experience playing her instrument, the piano, prior to the lead up to the comeback.

It was accompanied by a music video directed by Lumpens, which premiered on the same day on JYP Entertainment's YouTube channel.

The songs "Candle" (featuring Paloalto) and "Rewind" had dance practice videos released on YouTube on August 11 and 20, respectively.

As previously mentioned, this year was filled with a spectacular amount of K-pop album releases, but the best comes when the act fully embraces what makes them unique.

"[9] Billboard named Reboot the fourth best K-pop album of the 2010s decade in 2019, hailing the LP as a "testament to the power of pre-established musical genres as a transformative means of expressing oneself".

"[10] Cielo Perez from Paste ranked it the 8th greatest K-pop album of all time, writing that "there’s something for everyone to latch onto and obsess over on this album—a true benchmark of brilliance.

[citation needed] It peaked at number three on the country's comprehensive Gaon Digital Chart in the week ending on August 15, 2015.