요조, 에릭 – Nostalgia
Track 01 from Single "BrownClassic 1st (With 요조. 에릭)"
Release Date: 2008.06.16
에릭 – Is This The End (Feat. Min)
Track 02 from Album "6월의 일기 OST"
Release Date: 2005.12.07
에릭 – 세월의 흔적 다 버리고 (Duet. Lyn)
Track 13 from Album "Winter Story 2004-05"
Release Date: 2004.12.17
에릭 – Love Letter
Track 11 from Album "Winter Story"
Release Date: 2003.12.30