Just while everyone is getting addicted to MAMAMOO’s new single ‘AHH OOP’, the girl group’s company, WA Entertainment announces that MAMAMOO is going to comeback with their 2nd mini album next month. Turns out ‘AHH OOP’ is just a huge teaser for their real comeback in May. This is one of the best comeback teasers ever, a full length single , M/V and featuring a talented singer such as ESNA. MAMAMOO will end their activities related to ‘AHH OOP’ to focus on the final stages of the new album! Be sure to stay tuned for more MAMAMOO comeback updates!