Rookie boy group M.Pire has revealed that their October 30 comeback track "On My Mind" was composed and produced by JYJ member Jaejoong.

The seven member idol group debuted back in early August (that time as only six members) with the song "Can't Be Friends With You" and since then have been hard at work preparing for their follow up track.

Earlier this month M.Pire announced the addition of a new member Lumin, the son of Trot singer Sul Woon Do, to the lineup and raising some more curiosity about the group.

Now, via their agency Benjamin Entertainment, they have unveiled a minute-long preview of their new track "On My Mind."

The group also informed fans that not only did world-famous idol Jaejoong compose and produce the track for them, but M.Pire member Yooseung actaully assisted in writing the rap verse for "On My Mind."

The guys are planning to drop their new single album New Born on October 30, the day after Jaejoong's first full-length solo album WWW is scheduled for release, meaning that M.Pire will have some stiff competition ahead of them as they go up against the mentor in the charts.

Additionally, M.Pire will kick off promotions for their fall comeback with a performance on M! Countdown on October 31.

Stick around for more updates about M.Pire and their upcoming new single "On My Mind."