Returned from the military, two SM Entertainment best friends are ready to release their next album.

Super Junior's Heechul and The TRAX's Jungmo will be releasing a new M&D project group album in 2015, the follow up to the duo's 2011 song "Close Ur Mouth."

Heechul announced the news earlier in 2015, and continuously updated fans on Instagram.

On March 24, Heechul revealed that he and Jungmo have completed preparations for M&D's first mini album.

"The first minialbum is complete,"announced Heechul on Instagram.

The idol continued the announcement by explaining that he and Jungmo are solely in charge of the mini-album's creation and promotion. Heechul also included hashtags promoting Super Junior D&E (Donghae and Eunhyuk)'s recent comeback.

"The album's concept is 'cottage industry.' The music is all by is by Kim Jungmo.. The lyrics, music video, styling, broadcast schedule, etc. is done by me. Small talk concert I'll also do. I'm doing everything directly so I'm busy these days, like Leeteuk #Kimchisoup #KimHeechul #KimJungmo #MnD #MnDnE #DnE 1+1=Love #DnEpromotionbot"

The cottage industry system is an industrial system where people do manufacturing from their home, work on it typically part time.

M&D released its first song prior to both Heechul and Jungmo's enlistment in the Korean army. The two made their comeback as a Duo on KBS2's Immortal song 2, where Heechul sang performed a cover of Can's "My Life's Spring." Heechul sang while Jungmo played the guitar, before Can's Bae Ki sung appeared on stage.

M&D reflects the duo's identity, meaning both "midnight and dawn," as well as "Miari and Dangae-dong," the duo's respective hometowns.

Heechul also previously shared a behind the scene photo from the music video shooting. G-Friend's Yerin will appear in the music video.

 MUSIC VIDEO 촬영중 #MnD #우주대스타 #김희철 #장동민 #건희 #이진호 #나진 #조재걸 #여자친구 #예린

A photo posted by 우주대스타 ☆ 天上天下 希澈獨尊 (@kimheenim) on Mar 15, 2015 at 7:31pm PDT