Jay B at Incheon airport in 2019. Lim Jae-beom (Korean : 임재범 ; born January 6, 1994),[ 1] better known as Jay B and formerly JB , is a South Korean singer and songwriter, best known as a member and leader of South Korean boy band Got7 .
He got interested in musical composition when he was a b-boy,[ 2] but started writing songs only after joining JYP Entertainment in 2009:[ 2] [ 3] [ 4] he was first credited as a lyricist for the song "Bad Behaviour" from Got7's 2014 extended play Got Love .[ 5] In 2016, he became more involved in composition and adopted the pseudonym Defsoul ,[ 5] which was shortened to Def. the following year.[ 2] [ 6]
Songs All song credits are adapted from the Korea Music Copyright Association 's database, unless otherwise noted.[ 7]
2012–2016 Year Artist Title Album Lyrics Music Credited With Credited With 2012 JJ Project (with Kim Se-hwang, Robin, DJ Lip2Shot) "Na Na Na" (Ver. MM Choice) (나나나(Ver. MM Choice)) MM Choice Part. 2 Yes Junior , San E No — 2014 Got7 "Bad Behaviour" (나쁜 짓) Got Love Yes Alex G, Erika Nuri, Andy Love No — 2015 "Mine" Just Right Yes Jung Joo-hee No — "Everyday" (매일) Mad Winter Edition Yes Cho Wool of Princess Disease, BamBam Yes Cho Wool of Princess Disease 2016 "Fish" Flight Log: Departure Yes Daniel Kim, Park Jiyeon, Dr. B Yes Daniel Kim, Park Jiyeon "Something Good" Yes BamBam Yes Andrew Choi, 220, Mingsician "Home Run" Yes Daniel Kim, Park Jiyeon Yes Daniel Kim, Park Jiyeon "Skyway" Flight Log: Turbulence Yes Earattack Yes Earattack, Lish, The Kick Sound "Prove It" Yes — Yes 220, Royal Dive "Dreamin'" (니꿈꿔) Yes Earattack, BamBam Yes Earattack "If I Never Let You Go…" (離さなければ…) Hey Yah! Yes Frants, Kenji Kabashima Yes Frants Def. "Holic" 1/? vol. 1 Yes — Yes Mirror Boy "Don't Worry" Yes — Yes Mirror Boy "Sin" (feat. Jomalxne) Yes Jomalxne Yes Mirror Boy, Jomalxne, HNMR "Lost" Yes — Yes Mirror Boy "Bad Habit" (feat. Jomalxne) Yes Jomalxne, HNMR Yes Jomalxne, HNMR, Mirror Boy
2017 Artist Title Album Lyrics Music Credited With Credited With Got7 "Shopping Mall" Flight Log: Arrival Yes Earattack, Jackson , BamBam, Mark No — "Go Higher" Yes Earattack, Mark, BamBam, Jackson Yes Earattack, 5$ "Q" Yes GDLO Yes GDLO "Meet Me" My Swagger Yes Mirror Boy, D.Ham, Moon Hanmiru, Komu Yes Mirror Boy, D.Ham, Moon Hanmiru JJ Project "Tomorrow, Today" (내일, 오늘) Verse 2 Yes Jinyoung, J.Y. Park "The Asiansoul" No — "On & On" Yes Mr. Cho, Jinyoung Yes Mr. Cho, Jinyoung, Cheongdam-dong Gunwoo "Icarus" Yes Andrew Choi Yes Royal Dive, Andrew Choi "Don't Wanna Know" Yes Jinyoung No — "Find You" Yes Andrew Choi Yes Royal Dive, Andrew Choi "Fade Away" Yes Andrew Choi Yes Royal Dive, Andrew Choi Got7 "Teenager" 7 for 7 Yes FS Yes FS, Royal Dive "You Are" Yes Mirror Boy, D.Ham, Moon Hanmiru Yes Mirror Boy, D.Ham, Moon Hanmiru "Turn Up" Turn Up Yes Mirror Boy, D.Ham, Moon Hanmiru, Samuelle Soung Yes Mirror Boy, D.Ham, Moon Hanmiru "Why" Yes Shirai Yuuki Yes Royal Dive, Park Joseph, Lee Dong-woo
2018 Artist Title Album Lyrics Music Credited With Credited With Def. "Think of You" 1/? vol. 2 Yes — Yes Royal Dive "Channel" (feat. Jeebanoff, Jomalxne) Yes Jeebanoff, Jomalxne Yes Jeebanoff, Jomalxne, Royal Dive "Pray" Yes — Yes Royal Dive Got7 "One and Only You" (feat. Hyolyn ) Eyes On You Yes — No — "Look" Yes Mirror Boy, Moon Hanmiru, D.ham Yes Mirror Boy, Moon Hanmiru, D.ham JB "Rainy" Hyena on the Keyboard Part. 4 Yes — Yes Yiruma , Moon Hanmiru, Royal Dive Got7 "Shining On You" The New Era Yes D.ham, Moon Hanmiru, Mirror Boy, Samuelle Soung Yes D.ham, Moon Hanmiru, Mirror Boy "Hmmmm" Yes D.ham, Moon Hanmiru, Mirror Boy, Samuelle Soung Yes D.ham, Moon Hanmiru, Mirror Boy JB "Higher" Colors Yes — Yes Deepshower Got7 "Enough" Present: You Yes D.ham, Moon Hanmiru, Mirror Boy Yes D.ham, Moon Hanmiru, Mirror Boy "Save You" (지켜줄게) Yes D.ham, Moon Hanmiru, Mirror Boy Yes D.ham, Moon Hanmiru, Mirror Boy "Sunrise" Yes Jomalxne Yes Jomalxne, RoseInPeace Def. "Sometime" 1/? vol. 3 Yes — Yes RoseInPeace "Be With You" Yes — Yes RoseInPeace "Don't Care" Yes — Yes RoseInPeace "Island" (feat. Jomalxne) Yes Jomalxne Yes RoseInPeace, Jomalxne "Blind" Yes — Yes RoseInPeace Got7 "Come On" (안 보여) Present: You & Me Yes iHwak Yes iHwak, Royal Dive "1:31AM" (잘 지내야해) Yes Ars Yes Ars, minGtion, 220 "Think About It" Yes Mark Tuan , Ars Yes Mark Tuan , Ars, Lee Sang-chul, Mirror Boy
2019 Artist Title Album Lyrics Music Credited With Credited With Got7 "Reborn" I Won't Let You Go Yes Ars, Shirai Yuuki Yes Ars, Mirror Boy Jus2 "Focus on Me" Focus Yes Yugyeom Yes Yugyeom , Cosmic Boy, OLNL "Drunk On You" Yes Moon Hanmiru, John Napoleon, Keith Hetrick, Nate Gott Yes Moon Hanmiru, Keith Hetrick "Touch" Yes — Yes Christian Fast, Marcus Lindberg, Tania Doko, Royal Dive "Senses" Yes Moon Hanmiru, Deepshower Yes Moon Hanmiru, Deepshower "Breath" (吐息) Focus (Japan Edition) Yes Yugyeom , Stainboys Yes Yugyeom , Park Seul-gi (153/Joombas), Go Younghwan Got7 "Eclipse" Spinning Top: Between Security & Insecurity Yes J.Y. Park "The Asiansoul", D.ham, Mirror Boy, Moon Hanmiru Yes Mirror Boy, D.ham, Moon Hanmiru, Daviid, Yosia, NeD, Moon Kim, Vendors "Page" Yes Jomalxne, Royal Dive, iHwak Yes Jomalxne, Royal Dive, iHwak Offshore "Surfin" (Mirror Boy feat. Def., Jomalxne) Scene #1 Yes Jomalxne, Mirror Boy Yes Jomalxne, Mirror Boy "Laze" (RoseInPeace feat. Def., Jomalxne) Yes Jomalxne Yes Jomalxne, RoseInPeace "Play" (RoseInPeace feat. Jomalxne, Def., HNMR) Yes HNMR, Jomalxne, Royal Dive Yes HNMR, Jomalxne, Royal Dive Got7 "Your Space" Love Loop Yes Moon Hanmiru, Jomalxne, T-DOT Yes Moon Hanmiru, Jomalxne, RoseInPeace, Choi Yong-wook Def. "Something Special" 1/? vol. 4 Yes — Yes Nomad "Desire" Yes — Yes Nomad "Deeper" Yes — Yes Nomad "Runaway" Yes — Yes Nomad "Stopline" (feat. Rick Bridges) Yes Rick Bridges Yes Nomad, Rick Bridges Got7 "You Calling My Name" (니가 부르는 나의 이름) Call My Name Yes Kim Woo-ram, Lee Seu-ran, J.Y. Park "The Asiansoul" No — "Pray" Yes iHwak, Jomalxne Yes iHwak, Jomalxne, Zayson, RoseInPeace "Thursday" Yes iHwak, Royal Dive Yes iHwak, Royal Dive Def. "Ring" 1/? vol. 5 Yes — Yes Plan8 "Diary" Yes — Yes Plan8 "Nothing" Yes — Yes Plan8 "Curiosi" Yes — Yes Plan8 "Come Back to Me" Yes — Yes Plan8
2020 Artist Title Album Lyrics Music Credited With Credited With Offshore "Simple" (feat. Def., Mirror Boy) Scene #2 Yes Mirror Boy Yes Mirror Boy, Royal Dive "Smoke" (연기) (feat. Def., Jomalxne) Yes Jomalxne Yes Jomalxne, RoseInPeace "Take a Walk" (feat. iHwak, HNMR, Def.) Yes — Yes Mirror Boy, Royal Dive, iHwak, HNMR Got7 "Crazy" Dye Yes D.ham, Moon Hanmiru, Mirror Boy Yes Moon Hanmiru, Mirror Boy "Ride" Yes — Yes iHwak, Zayson, Royal Dive Offshore "Just Stay" (feat. Def., Junny) Cut #1 Yes Junny Yes Junny, Royal Dive "Sweet Dream" (feat. Def.) Yes — Yes Royal Dive Jeebanoff "Callin" (feat. Def.) Good Thing (Remix) Yes Jeebanoff Yes Jeebanoff, Swimgood1 Got7 "Last Piece" Breath of Love: Last Piece Yes D.ham, Jomalxne Yes iHwak, Moon Hanmiru, RoseInPeace, Jomalxne, Zayson, Mirror Boy Wavycake, Ovus "Dream" (꿈) (feat. Def) REALusion Yes Ovus Yes Wavycake, Ovus $ün "In December (Sad Night)" (12월엔 (Sad Night)) (feat. Def.) White Yes $ün, Lee Yu-mi, Rudbeckia Yes $ün, Rudbeckia, Bae Min-soo, Park Jae-hyung
2021 Artist Title Album Lyrics Music Credited With Credited With Offshore "Cold Night" (feat. Def., HNMR, Jomalxne) Scene #3 Yes a Yes HNMR, Jomalxne, RoseInPeace "Call Me" (전화해) (feat. Def., Jomalxne) Yes Jomalxne Yes Jomalxne, RoseInPeace Jay B "Switch It Up" (feat. Sokodomo) Non-album single Yes Jay Park , Sokodomo Yes Jay Park , Cha Cha Malone s/s "Memory" (feat. Def.) Seesaw Yes — Yes s/s Jay B "B.T.W" (feat. Jay Park) SOMO:Fume Yes Jay Park Yes Jay Park, Cha Cha Malone "AM PM" (feat. Wheein ) Yes Jay Park, Sound Kim Yes Sound Kim, Gray , DAX, Chrli "Fame" (feat. JUNNY) Yes Junny Yes Junny, GroovyRoom , Bin, Bell "In To You" (feat. g1nger) Yes g1nger, Jay Park Yes g1nger, Jay Park, Woogie "Count on Me" Yes — Yes Junny, GroovyRoom, Kwaca "Paranoia" Yes Jay Park Yes Jay Park, pH-1 , GroovyRoom "I'm Surfin' (Gangneung & Yangyang)" Feel the Rhythm of Korea Pt. 1 Yes — Yes GroovyRoom, Bin, Bell Def. & Fudasca "Is It A Dream?"[ 8] Non-album single Yes Simone Eleuteri Yes Fudasca Mirani "P.S." (feat. Jay B) Uptown Girl Yes Mirani Yes Mirani, Jintae Ko, Charlie Snyder, Sofia Quinn, Dom Perfetti, Defsoul, GroovyRoom Ourealgoat "Thought of You" (생각했어) (feat. Jay B) Non-album single Yes Ourealgoat No — Junny, Jay B "Nostalgia" Nostalgia Yes Junny, Jane Yes Junny, No2zcate
2022 Artist Title Album Lyrics Music Credited With Credited With Def. "Again" (feat. Leon) Love. Yes Leon Yes Royal Dive, Mirror Boy, Saimon, Leon "Why?" (왜그래?) Yes — Yes Royal Dive, Saimon, Mirror Boy "I Just Wanna Know" Yes — Yes Mirror Boy, Royal Dive, Saimon "Like a Fool" (바보같이) (feat. Junny) Yes Junny Yes Mirror Boy, Simon, Royal Dive, Junny "Want U" Yes — Yes Saimon, Royal Dive, Mirror Boy "Sunset With You" Yes — Yes Saimon, Mirror Boy, Royal Dive NXPS "Night" (feat. Def.) [ 9] Non-album single Yes NXPS Yes NXPS, Deepshower Bigone "Windy Day" (바람이 나를 안을 때) BIGONEISTHENAME Yes Bigone Yes Nmore, Bigone, Hong Hoon-gi Got7 "Truth" Got7 Yes Leon, iHwak Yes iHwak, HRDR, Leon "Nanana" Yes iHwak Yes iHwak, Royal Dive "Don't Leave Me Alone" Yes iHwak Yes iHwak, Royal Dive H1ghr Music "BRB"[ 10] Non-album single Yes Haon, Sik-K, Trade L, Big Naughty, pH-1, Park Hyeon-jin, Jay Park Yes Cha Cha Malone, GroovyRoom, Haon, Sik-K, Trade L, Big Naughty, pH-1, Park Hyeon-jin, Jay Park Skinny Brown, Kim Seung-min, Jay B, Big Naughty "Lone Wolf (3:00 AM)" (풀리지 않는 고민) (3:00 am)[ 11] Listen-Up EP.3 Yes Skinny Brown, Kim Seung-min, Big Naughty Yes Skinny Brown, Kim Seung-min, Big Naughty, Dress SMMT "I'll Be Fine" (feat. Jay B) Mr. Hollywood Yes — Yes SMMT Jay B "Go Up" Be Yourself [ 12] Yes Son Jung-hwa (Jam Factory), Yoo Da-eun (Jam Factory), Sabon No — "Break It Down" (feat. Sik-K ) Yes Sik-K, Leon Yes Sik-K, Leon, Royal Dive "Livin'" Yes — Yes Junny, Royal Dive "The Way We Are" Yes Joo Yoon-kyung, Sabon, Cha Yu-bin No — "Fountain of Youth" No — Yes Andrew Stoelzing, Dougie F, Im Jung-woo, Paprikaa "Holyday" No — Yes iHwak, Mirror Boy, Royal Dive Jomalxne feat. Jay B "GZRGH" (꺼지라고해) Sky Walker [ 13] No — Yes Jomalxne, Royal Dive, Zayson, RoseInPeace Def. "My Bad" Abandoned Love. Yes — Yes Wavycake, Mirror Boy "Calm Down" Yes — Yes Wavycake, Mirror Boy "My Abandoned Love" Yes — Yes Wavycake, Mirror Boy "Not Easy" Yes — Yes Wavycake, Mirror Boy "Right" (맞아) Yes — Yes Wavycake, Mirror Boy "You Say" Yes — Yes Wavycake, Mirror Boy "Will Spring Come?" (봄이 올까?)[ 14] Non-album single Yes — Yes Mirror Boy, Noden, Chillingcat
2023–2025 Artist Title Album Lyrics Music Credited With Credited With Soulbysel, Def. "About You" Soulbysel Compilation 04 Yes — Yes Noair, Plan8, Daul Jay B "One Moment" (잠시만) Seasonal Hiatus Yes — Yes 1of1, Holynn, Akira "Whiskey" Yes — Yes Woogie, iHwak "Wonder" Yes Jo Yoon-kyung Yes Mikey!, En Offshore "Favorite" (feat. Def., Junny, iHwak, Royal Dive) Scene #4 [ 15] Yes Junny, iHwak, Royal Dive Yes Junny, iHwak, Royal Dive "Bada" (feat. Def., Leon, Mirror Boy) Yes Leon, Mirror Boy Yes Leon, Mirror Boy "Hell of a Life" (feat. iHwak, Def., Junny, Mirror Boy) Yes iHwak, Junny, Mirror Boy Yes iHwak, Junny, Mirror Boy DXTEEN "Snowin'"[ 16] Non-album single Yes D.ham, Mirror Boy, Moon Hanmiru Yes D.ham, Mirror Boy, Moon Hanmiru Jay B "Baby" Archive 1: [Road Runner] Yes iHwak Yes iHwak, Royal Dive "If You" Yes — Yes Royal Dive "Make Me Right" Yes Leon Yes Leon, LNB "Chosen" Yes — Yes Royal Dive "Take it Easy" Yes Junny Yes Royal Dive, Junny "Crash" Yes Paul Blanco, Jomalxne Yes Saimon, RoseInPeace, Paul Blanco, Jomalxne "Preview" Yes D.ham Yes Moon Hanmiru, Mirror Boy "°C (Temperature)" (온도) Yes — Yes Lee Sang-chul, Moon Hanmiru, Mirror Boy "Right Back" Yes Zayson Yes Zayson "Inside" Yes iHwak Yes iHwak, Byun Si-yeon, Yoo Je-hyuk, Kim Si-hoon "Cloud Nine" Yes — Yes Spencer William, Markie Alvin Thompson, Baeeum, Largo, Chad, iHwak "Present" Yes — Yes Kim Wook "Winter Night" Yes — Yes NO2ZCAT, Vella Got7 "Darling" Winter Heptagon Yes — Yes iHwak, Jay Dope "Yours Truly," (우리가할수있는말은.) Yes Got7 Yes Wuk
References ^ "JB (임재범)" (in Korean). Naver. ^ a b c "GOT7의 JB, 그의 또 다른 모습 DEF" . The Bling Magazine (in Korean). February 26, 2017. Archived from the original on February 26, 2017. Retrieved February 16, 2021 . ^ Kim, Won-gyum (May 25, 2012). "JJ프로젝트, 박진영·임재범 이름에 금테까지 둘렀다" . Donga Ilbo (in Korean). Retrieved February 16, 2021 . ^ "GOT7、芸能人への憧れから母親の影響まで…僕たちが歌手になった理由 - INTERVIEW - 韓流・韓国芸能ニュースはKstyle" . Kstyle (in Japanese). Retrieved February 17, 2021 . ^ a b "JYP Creators list - Defsoul" . JYP Entertainment . Archived from the original on January 11, 2021. Retrieved February 17, 2021 . ^ "그러고 보니 재범은" . Arena (in Korean). August 6, 2019. Retrieved February 17, 2021 . ^ "Songs registered under JB / Defsoul / Lim Jae-beom / Def. (10007952)" . Korea Music Copyright Association . Retrieved August 28, 2022 . ^ "Is It A Dream? - Fudasca, Def" (in Korean). Retrieved August 28, 2022 . ^ "NIGHT (feat. Def.) - NXPS" (in Korean). Retrieved August 28, 2022 . ^ "BRB - H1GHR MUSIC" (in Korean). Retrieved August 28, 2022 . ^ "풀리지 않는 고민 (3:00 am) (Prod. BIG Naughty (서동현)) - Skinny Brown, 김승민, JAY B, BIG Naughty (서동현)" (in Korean). Retrieved August 28, 2022 . ^ "Be Yourself - JAY B" (in Korean). Retrieved September 21, 2022 . ^ "꺼지라고해 (Feat. JAY B) - Jomalxne (조말론)" (in Korean). Retrieved October 10, 2022 . ^ "봄이 올까? - Def" (in Korean). Retrieved December 26, 2022 . ^ "Scene #4 - ŌFFSHORE" (in Korean). Retrieved October 16, 2023 . ^ "Snowin' / DXTEEN" (in Korean). Retrieved December 8, 2023 .