Fans will get to hear Gummy's voice once again through male artist Big Brother's digital single, "Only One", to be released on the 15th, marking the start of her busy year-end activities.

SEE ALSO: Wheesung and Gummy to reunite for a year-end concert and a duet song

C-JeS Entertainment stated, "Talented female vocalist Gummy featured in Big Brother's digital single, 'Only One', which will be released tomorrow. She recently performed an impressive stage as a special guest during Jaejoong's solo concert and will hold a year-end concert with Wheesung at the end of December as well as make a full return this December."

Gummy and Wheesung will release a duet song later this month and will also hold a duet concert named after their first duet song, "Do It", at COEX, Samsungdong on December 31. 

While we wait for Big Brother and Gummy's release tomorrow, you can check out the MV teaser below!