Group MBLAQ, Rainbow and Kim Ye Rim are all scheduled to return on June 4.

June 4, groups MBLAQ, Rainbow and Kim Ye Rim will each release their new albums and officially begin their promotional activities. They will be joining in the idol battle of June.

MBLAQ will release their 5th mini-album Sexy Beat with their title song "Smokey Girl". Producer Primary participated in the production of "Smokey Girl" while Zion.T and Simon D aided MBLAQ in producing the album.

According to J. Tune Entertainment, "Smokey Girl" will be a song that is sure to catch attention with its sensual beats. It is described as something that is 180 degrees different from MBLAQ's music from the past, not to mention that it will be a new type of song among idols groups.

For the group Rainbow, it will be their return after "Tell Me Tell Me" from February, earlier this year. Rainbow will comeback with "Sunshine" and reveal their silly and adorable side to draw attention.

In their teaser image, members of Rainbow wore matching orange colored working clothes and messed up a room with paint. They then act crazy with water guns while looking adorable and lovely during the whole time.

Their concept has been described as someone acting silly and comically in order to get the attention of the one they love. The song "Sunshine" will surely be another cute love song.

Kim Ye Rim will release "Colorring" on this day as a solo artist. The song will be about a couple who are experiencing a slump in their relationship. The song states that even the phone rings shakily when the relationship is shaky.

Kim Ye Rim will reveal a mature side of herself that has never been seen before.

Last month on the 24th, Kim Ye Rim's group Two Months topped the music charts with their single "Number 1" and impressed the crowd. Kim Ye Rim is predicted to find a lot of success as a solo artist.

In the meantime, other groups like 2NE1, Sistar, After School and Ivy will all comeback in June along with MBLAQ, Rainbow and Kim Ye Rim.