Kim Jong Kook, Yang Da Il - Spring has come (with Yang Da-Il)

Kim Jong Kook, TJ, Cha Tae Hyun, Hong Kyung-min, 홍경인, Kang Hoon - And, Go on

Kim Jong Kook - My Love

Kim Jong Kook, KCM, Mirani - I LUV U (with MIRANI)

Kim Jong Kook - Walking Along With You

Kim Jong Kook - Tear Thief (The Forbidden Marriage X Kim Jong Kook)

Kim Jong Kook, ATEEZ - Be My Lover

Kim Jong Kook - forget-me-not

Kim Jong Kook - 고맙다
Kim Jong Kook - 그리운 날들
Kim Jong Kook, 마이키 - 오래 오래 (feat. 마이키)
Kim Jong Kook - 어제보다 오늘 더
Kim Jong Kook, Mighty Mouth - Forever (feat. Mighty Mouth)
Kim Jong Kook, 시진 - 이보다 더 좋을 순 없다 (feat. 시진)
Kim Jong Kook - 그 집 앞 1
Kim Jong Kook - 그 집 앞 2
Kim Jong Kook, Joosuc - 사랑에 취해 (feat. 주석)
Kim Jong Kook - 이별의 정석
Kim Jong Kook - 이제는 안녕
Kim Jong Kook, 칭따이 - 사랑해 널 사랑해 (feat. 칭따이)
Kim Jong Kook - 어떤 사람 어떤 사랑
Kim Jong Kook - 우리 둘이서

Kim Jong Kook - Baboya

Tiffany, 김종국, Dynamicduo, 여진구, 김유정, Eddy Kim, 전현무, 유인영 - Talk about Love

Kim Jong Kook - Mark of Tear (From -Love in Memory 2-)
Kim Jong Kook - Mark of Tear (Acoustic Version)

Kim Jong Kook - 모르나요

Kim Jong Kook - 기억이란 사랑보다
Kim Jong Kook - 슬픈바다
Kim Jong Kook - 개여울
Kim Jong Kook, gary - 다시 내게로 돌아와 (feat. 개리)
Kim Jong Kook - 편지
Kim Jong Kook - 사랑하기에
Kim Jong Kook - 당신도 울고 있네요
Kim Jong Kook - 가을편지
Kim Jong Kook - 먼지가 되어
Kim Jong Kook - 토요일은 밤이 좋아

soya, Kim Jong Kook - Loving Everyday

김종국, SHORRY J - 행복병

김종국 - 사랑한다는 말
김종국 - 너만 모르는 이야기
김종국 - 편지
김종국 - 한 사람
김종국 - 사랑이에요
김종국 - 고백
김종국 - 사랑이 아파도
김종국 - 사랑지기
김종국 - 그녀를 알아요
김종국 - 토박이
김종국 - 첫사랑
김종국 - 사랑했나봐
김종국 - 이별도 고마워
김종국 - 꿈을 향해

Kim Jong Kook, SG Wannabe - 바람만바람만
Kim Jong Kook, SG Wannabe - 바람만바람만(Guitar performed by 함춘호)
Kim Jong Kook, SG Wannabe - 바람만바람만 (한가인 나레이션 VER.)

Kim Jong Kook - 제자리 걸음
Kim Jong Kook - 그녀의 남자에게
Kim Jong Kook - 슬픈 축하
Kim Jong Kook - 선물
Kim Jong Kook - Happiness
Kim Jong Kook - 사랑스러워
Kim Jong Kook - 지우개
Kim Jong Kook - Dream
Kim Jong Kook - 토요일밤
Kim Jong Kook - 별, 바람, 햇살 그리고 사랑
Kim Jong Kook - One Night
Kim Jong Kook - 친구에게
Kim Jong Kook - 바보같은 나
Kim Jong Kook - 연습
Kim Jong Kook - 여전히

Kim Jong Kook - Prologue
Kim Jong Kook - Sad Story
Kim Jong Kook - Angel
Kim Jong Kook - Because I`m a Man
Kim Jong Kook - I Wish You Happiness
Kim Jong Kook - I Loved You
Kim Jong Kook - Disco
Kim Jong Kook - Scent of a Woman
Kim Jong Kook - Love Story
Kim Jong Kook - Thriller
Kim Jong Kook - Night
Kim Jong Kook - 1434
Kim Jong Kook - One
Kim Jong Kook - My Way
Kim Jong Kook - From Friend to Lover