Actor Yoon Sang Hyun and his wife-to-be singer MayBee are not just busy getting ready for their wedding. They are releasing a single. The single, titled "Balsam Colors" is a duet. And the profits will be donated to the poor.

Although Yoon Sang Hun is primarily known as an actor for his roles in "Secret Garden," "I Hear Your Voice" and "Gap Dong," he is also a singer, having released a single in Japan. He recently sang at the wedding of his "I Hear Your Voice" co-star Lee Bo Young when she married actor Ji Sung.

MayBee debuted as a singer in 2006 and she has written songs for Lee Hyori, MC Mong, A Pink and SG Wannabee. She wrote "10 Minute" for Lee Hyori.

The lyrics of the couple's single, "Balsam Colors," describe how people infuse each other's lives with beautiful colors.

MGB Entertainment, Yoon Sang Hyun's agency talked about his involvement in the production of the single.

"Despite the fact that he is terribly busy, he chose the song and personally found the people to work on their single, " the MGB representative told the Segye Ilbo.

One of those who helped create the sing was composer Kim Hee Won. He worked with MayBee on her song "I Wish."

Yoon Sang Hyun and MayBee plan to marry in a private ceremony on February 8 at the Seoul Walker Hill. The single "Balsam Colors" will be released on February 9.

Yoon first announced his intention to marry on "Healing Camp" in November 2014. He and MayBee only began dating in July of 2014 but he quickly knew that she would be the one for him.

"It hasn't been that long since I started dating her but I felt sure," he said. "She is the woman that I've been looking for."

At 41 he is six years older than she is but he does not see that as an issue. He also knows she understands the demands of his work.

The couple took wedding photos for a spread in Marie Claire magazine. The spread included a photo that looked like they were honeymooning on a beach and a photo that showed them prepping food in the kitchen. In the magazine Yoon said that he did not hesitate to marry MayBee so quickly after he met her because it did not take him long to realize his love.

She said that she was grateful that he came into her life.