[2][3] On June 11, Mamamoo announced the upcoming release of Pink Funky and lead single "Um Oh Ah Yeh".

[6] In the music video for "Um Oh Ah Yeh", three of the members dress up as men, wearing wigs, beards, and prosthetic makeup.

[8] On June 14, Mamamoo held guerilla concerts in Daehangno and Hongdae, where they performed "Um Oh Ah Yeah" for the first time.

"Freakin Shoes" is a trap and hip hop song written by Hwasa, with music co-composed by Kim and Seo Jae-woo.

It was written by Esna, and the lyrics tell men to stop using cliché pick-up lines and treat women with respect.

[23][24] The release of Pink Funky solidified Mamamoo's reputation as a girl group who can sing well, and their popularity rose with the success of "Um Oh Ah Yeh".

[7] This was partly due to the music video, which went viral on Facebook and "sent shockwaves through the K-pop scene", according to Yonhap's Chung Joo-won.

[12][25] Scott Interrante, writing for PopMatters, said the album "features a more polished mainstream sound while retaining the focus of [Mamamoo's] powerful vocals".