The introductory track is an orchestral medley of the group's most famous hits and was recorded by the Czech National Symphony Orchestra.

[9][10] The song follows the humorous style of "Sky Blue Balloon" and satirizes their own journey from newly debuted young pop stars to middle-aged experienced "seniors" (Korean: 선배; RR: seonbae) in the entertainment industry, referencing Park Jin-young ("JYP") whom they worked with closely during their early days and the reality show Dad!

It alludes to two of the group's hit songs, "Friday Night" and "The Place Where You Should Be" (니가 있어야 할곳), especially the funk rhythm and lyrics.

The music videos for "Sky Blue Promise",[8] "Saturday Night" and "The Story of Our Lives" were uploaded on YouTube by CJ E&M and each has since recorded over a million views.

[17] It contains a 50-page photo book of behind-the-scenes and shots from the national tour and an additional single entitled "Wind", which was written by Yoon Kye-sang and dedicated to the fans.

"[20] Critics have noted that the album had a nostalgic feel as the group chose to retain their signature blend of R&B and rap in the new songs and praised the group for choosing to retain their unique sound rather than follow current trends, thus being able to appeal to both nostalgic older fans as well as newer K-pop fans seeking more variety in genres and musical styles.

[21][22][5][23][2][24] Several English-language K-pop blogs have opined that the group have proven through their new album that they have not lost their unique sound despite the long hiatus[3][25] and Hellokpop.com added that while the songs were musically similar to their past hits, "They don’t look wistfully towards the glory years; instead, they aim to keep their trademark down-to-earth, in-touch image while lyrically recognizing their years and celebrating the reunion.