Producer Kim Do Hoon's girl group MAMAMOO will debut on June 18.

On June 17, MAMAMOO posted on their official Twitter: "Wow, only a day left before our debut! Thanks to those of you that waited for us. We finally go on the search for "Mr. Ambiguous" tomorrow!"

MAMAMOO is composed of members Solar, Moon Byul, Whee In, and Wha Sa. The group is produced by Kim Do Hoon, who produced Soyou and Junggigo's "Some", Wheesung's "With Me" and CNBLUE's "I'm a Loner".

Rookie MAMAMOO collaborated with Bumkey, K.Will, and Wheesung earlier in the year, achieving success in music charts and receiving positive response from music fans.

The members have worked together to create the choreography of their title song "Mr. Ambiguous" and have listed their own composed songs in the album.

For their debut, musicians like Wheesung, K.Will, Bumkey, Rhymer, Jung Joon Young, and CNBLUE's Lee Jong Hyun have made an appearance in their music video.

Meanwhile, MAMAMOO will release title song "Mr. Ambiguous" through online music stores on June 18.