Colaborações

Lim Jeong-Hee – Vol.2 Thanks - 2006

운명 - Destiny

Uhm Jung-Hwa – Vol.9 Prestige - 2006

Come 2 Me

Music Is My Life (Part 2) - 2007

Music (Epik High, K.Will)

8Eight – Vol.1 The First - 2007

들어요 (Feat. K.Will, Lim Jeong-Hee) - Listen

Lim Jeong-Hee – Vol.3 Before I Go - 2007

들어요 (Feat. 8Eight, K.Will) - Listen

Hye Mi – Vol.1 Smoothy - 2007

You’re My Everything (Feat. K.Will)

Suho – To. U (Single) - 2007

그냥 이렇게.. (Feat. K.Will) - Just Like This..

MBC Music Travel LaLaLa Live Vol.5 - 2009

지금 이 순간 - This Is The Moment

Over The Rainbow (K.Will, Shin Moon-Hee)

Project: Color Chocolate - 2009

초콜릿 (K.Will, Mario) - Chocolate

Mighty Mouth – Love Class (EP) - 2009

Why (Feat. K.Will)

Taw – I Introduce My Girl Friend (Single) - 2009

내 여자 친구를 소개합니다 (Feat. Bae Soo-Youn, K.Will) - I Introduce My Girl friend

Snow Village (Single) - 2009

눈 내리는 마을 (After School, Ahn Young-Min, Brown Eyed Girls, Kan Mi-Youn, K.Will, Tei, Sook Hee) - Snow Village

E Sung – Yeo Chin Soo (Single) - 2009

여.친.소 (With Taw, Kim Hyung Jung) (Feat. K.Will) - Yeo Chin So

Blue Brand Vol.2 Trauma Part 1 - 2010

아무 말도 하지마 (JP Kim Feat. K.Will) - Don’t Say Anything

After The Bus Left (Single) - 2010

버스가 떠난 뒤에 (Feat. Miryo - Brown Eyed Girls) - After The Bus Left

Navi – We Really Loved Each Other (Single) - 2010

나비 (NAVI) – 우리 정말 사랑했어요 (With K.Will) - We Really Loved Each Other

Gilme – Love Actually - 2010

길미 – 미안해 사랑해서 (With K.Will) – Sorry, I Loved You

Zia – Difference (Mini Album) - 2010

지아 – 사랑을 가르쳐 주세요 (Feat. 케이윌) – Please, Show Me Your Love

Road for Hope ‘선물’ - 2010

Road for Hope ‘선물’  – Various Artists   ‘Gifts’

The Name – Barely Alive - 2011

The Name – 겨우 살아  (feat. K.Will)  – Barely Alive

Zia – Hope It is You - 2011

지아 – 그대이길 바래요 (With 케이윌)  – Hope It is You

Starship Planet – Pink Romance - 2011

K.Will, Boyfriend, Sistar – 핑크빛 로맨스  – Pink Romance

Starship Planet – White Love - 2012

K.Will, Boyfriend, Sistar – 하얀 설레임  - White Love