- SG Wannabe - Cheoeum Cheoreom (처음처럼; Like The First Time)
- Zia - Beoreut Cheoreom (feat. Mino) (버릇처럼; Like A Habit)
- Cheoeum Cheoreom (MR) (처음처럼)
- Beoreut Cheoreom (MR) (버릇처럼)
"Cheoeum Cheoreom" is the collaboration single between vocal group SG Wannabe and singer Zia. It was the third digital single from Cho Young Soo's All Star 2 album, which was released 15 days later including both songs (without the instrumentals).