Botton Choi - My one and only (feat. Funkyman)
Botton Choi - 그런 흔한 이별, 그런 흔한 이야기 (feat. Funkyman)
Botton Choi - Funkyman’s Guitar
Botton Choi - 빗속에서 (In the Rain) (With Tae Hee)
Botton Choi - 낙엽 엔딩 (Fallen Leaves Ending) (feat. Shim Iju)