[5][6] The song "Girl Crush" is from the soundtrack of the video game Innisia Nest, and was originally released as a single on September 16, 2015.

[6] "Taller Than You" is a hip hop song with a trap beat drop, written by Kim with lyrics co-written with Moonbyul, Solar, and Hwasa.

[4][18] "Words Don't Come Easy" is jazz-influenced song with a bossa nova melody written by Kim and Park Woo-sang, with additional lyrics writing by Esna.

"Friday Night", featuring Junggigo, is an uptempo R&B song written by Park, with additional lyrics by Moonbyul.

"Funky Boy" is upbeat, retro-inspired song with lyrics by Yoon Hye-joo and music by Daniel Palm and Ellen Berg Tollbom.

"Cat Fight" was written by Lee Hoo-sang, with music co-composed by S2REN and additional lyrics by Hwang and Moonbyul.

"Recipe" and "Cat Fight" are both retro style songs that fit into the doo-wop and swing genres.

Tamar Herman, writing for Billboard, said the album "brings a retro soul feel back to the K-pop world, heralding the Korean quartet's rise to the top ranks of the girl group hunger games".

[18] Fuse's Jeff Benjamin said "You're the Best" was possibly the group's best single and music video to date, and described the song as having a "throwback style" blended with "feel-good bubblegum pop".

He also noted the group's vocal cohesion and "on-point harmonies", and said the music video showcased their "fun personalities".