Talent-packed female group�MAMAMOO�are making their official debut with their title track �"Mr. Ambiguous" off their mini album 'Hello'!

The group had already gathered quite a bit of attention with their talents through pre-debut projects in collaboration with several artists like K.Will and Geeks, so their official debut has been a much awaited one. In addition to their vocals, all the members possess the skills to compose and write their own music, making this a group of singer-songwriters, which differentiates them from many other groups out there.

For their debut, the girls have also recruited�CNBLUE's�Jonghyun�for an appearance in their music video for their title song, providing some eye candy as well while treating our ears to their awesome voices! Baek Ji Young also makes a cameo towards the end as well to provide some comic relief, while K.Will makes a brief appearance as the cameraman, Bumkey as the chorus, Rhymer as the camera director, Wheesung as the director, and Jung Joon Young as a staff member. See if you can spot all of them!

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So without further ado, check them out in the MV above!