The next hint for MBLAQ's upcoming project was revealed through member G.O.� While Mir teased that this upcoming project might be solo work, this is further enhanced by G.O, who asks, "Who is the owner of the voice for the 'Monster' music? �Listen with us!"

SEE ALSO: Mir teases that MBLAQ's upcoming project is a solo project?

They added a link to an audio teaser that has an eerie, almost haunted house kind of tone with the use of dramatic violins--and this ends with a member's voice.

Who do you think might be the member getting ready for a possible solo debut?

[#MBLAQ] ??? ??? ??? ??!! ??? ??? ??? ???? ?????? ?? ?????! http://t.co/OeAjk3MckZ pic.twitter.com/oOYMK1oaLg

� jtunecamp (@JTune_official) September 2, 2014