Girl group After School's member Raina said, "I want to do collaborations with Kim Dong Ryul and Sung Si Kyung."

During an interview held on October 7, Raina chose Kim Dong Ryul and Sung Si Kyung as singers she wants to work with after working with rappers San E and Kanto.

Raina said, "I've been saying this for a while now but I really like Sung Si Kyung. I listen to Kim Dong Ryul's songs everyday too. I think his voice is really a legend. When I grow more and get better, I want to work with them once."

About the collaoration duet trends that started off with 'Some', Raina said, "I agree that it's been getting big these days. There have been many collaboration projects until now but they made the biggest hit this year."

She continued, "Both with After School and Orange Caramel, it sometimes gets so chaotic focusing on the dancing while singing at the same time. When I saw Soyou, I was a bit jealous. I didn't have much thought about collaboration before but I saw Soyou sitting down and singing so prettily and thought it looked good."

Raina released a duet song with San E "A Midsummer Night's Sweetness" in June and will be officially making a solo debut with her first solo single "Reset" on October 8.