BADD

BADD or Billie Jean (빌리진), born Choi Jae-yeol (최재열), is a South Korean music producer, lyricist, vocal director, and digital editor. He is the chief music producer of MODHAUS.
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==Contribution to LOONA’s discography==
Year	Song 	Lyrics	Composition	Arrangement	Other
2018	“Rosy” 	✖ 	◯ 	◯ 	◯
2018	“dal segno” 	— 	◯ 	◯ 	✖
2018	“love4eva” 	✖ 	◯ 	◯ 	◯
2018	“+ +” 	✖ 	◯ 	✖ 	✖
2018	“favOriTe” 	✖ 	◯ 	◯ 	✖
2019	“X X” 	— 	◯ 	◯ 	✖
2019	“색깔 (Colors)” 	✖ 	◯ 	◯ 	◯
2023	“Je Ne Sais Quoi” 	◯ 	✖ 	◯ 	✖
2023	“Video Game” 	✖ 	✖ 	✖ 	◯
2023	“Addiction” 	✖ 	◯ 	◯ 	◯
2023	“Sweet Crazy Love (English Version)”	✖ 	✖ 	✖ 	◯
2024	“Virtual Angel” 	✖ 	✖ 	✖ 	◯
==Notable works for other artists==
Artist 	Song 	Album 	Year	Notes
백찬 (BAEKCHAN) 	“keepitgoin’on” 	BAEKCHAN 01 	2020	Composition, arrangement
정홍일 (Jeong Hong-il) 	“환영 (Illusion)” 	환영 (Illusion) 	2023	Composition, arrangement
OnlyOneOf 	“blOssOm” 	dot point jump 	2019	Composition, arrangement
OnlyOneOf 	“구원 (sage)” 	line sun goodness	2019	Composition, arrangement, instruments, programming
OnlyOneOf 	“bOss” 	line sun goodness	2019	Composition, arrangement, instruments, digital editing, programming
OnlyOneOf 	“본능 (instinct)” 	Instinct Part. 1 	2021	Composition, arrangement, digital editing, programming
OnlyOneOf 	“극락 (ultimate bliss)” 	Instinct Part. 2 	2021	Composition, arrangement, synthesizer, vocal direction
OnlyOneOf 	“candy bOmb” 	seOul cOllectiOn 	2023	Composition, arrangement, synthesizer
OnlyOneOf 	“blueblueseOul” 	seOul cOllectiOn 	2023	Composition, arrangement, synthesizer
SATURDAY 	“Super Bad” 	Follow SATURDAY 	2019	Composition, arrangement, synthesizer
tripleS 	“New Look” 	<ASSEMBLE> 	2023	Composition, arrangement, synthesizer
tripleS 	“초월 (Chowall)” 	<ASSEMBLE> 	2023	Composition, arrangement, synthesizer
tripleS 	“White Soul Sneakers” 	<ASSEMBLE24> 	2024	Composition, arrangement
tripleS 	“이면의 이면 (Beyond the Beyond)” 	<ASSEMBLE24> 	2024	Composition, arrangement
tripleS 	“Dimension” 	<ASSEMBLE24> 	2024	Composition, arrangement
tripleS Acid Angel from Asia	“Rolex” 	<ACCESS> 	2022	Composition, arrangement, synthesizer, vocal direction, digital editing
tripleS Acid Angel from Asia	“Dimension (AAA Ver.)” 	<ACCESS> 	2022	Composition, arrangement, synthesizer, vocal direction, digital editing
tripleS ACID EYES 	“Cherry Gene ‘Baddest Mix’” 	<Cherry Gene> 	2023	Composition, arrangement, mixing
tripleS LOVElution 	“&#8576;” 	ↀ 	2023	Composition, arrangement, synthesizer
tripleS LOVElution 	“복합성 (Complexity)” 	ↀ 	2023	Composition, arrangement, synthesizer
tripleS LOVElution 	“Number 8” 	ↀ 	2023	Composition, arrangement, synthesizer
tripleS EVOLution 	“&#10209;” 	⟡ 	2023	Composition, arrangement, synthesizer
tripleS EVOLution 	“Moto Princess” 	⟡ 	2023	Composition, arrangement, synthesizer
tripleS NXT 	“Just Do It” 	“Just Do It” 	2023	Lyrics, composition, arrangement
TWICE 	“FIREWORK” 	MORE & MORE 	2019	Composition
==Frequent collaborators==
===Kim Jin-hyung===
Kim Jin-hyung (김진형) is a South Korean music producer.
====Contribution to LOONA’s discography====
Year	Song 	Lyrics	Composition	Arrangement	Other
2018	“Rosy” 	✖ 	◯ 	◯ 	◯
2018	“love4eva” 	✖ 	◯ 	✖ 	◯
2018	“favOriTe” 	✖ 	◯ 	◯ 	✖
2019	“X X” 	— 	◯ 	✖ 	◯
2019	“색깔 (Colors)” 	✖ 	◯ 	✖ 	◯
===Slyberry===
Slyberry (슬라이베리), born Lee Jin-ho (이진호), is a South Korean music producer.
====Contribution to LOONA’s discography====
Year	Song 	Lyrics	Composition	Arrangement	Other
2018	“dal segno”	✖ 	◯ 	◯ 	✖
2018	“+ +” 	✖ 	◯ 	✖ 	✖
2018	“favOriTe” 	✖ 	◯ 	◯ 	✖
2019	“X X” 	— 	◯ 	◯ 	✖
===Darly===
===Hickee===
Hickee (히키), born Kim Na-rae (김나래), is a South Korean singer-songwriter, vocal director, and background vocalist.
====Contribution to LOONA’s discography====
Year	Song 	Lyrics	Composition	Arrangement	Other
2018	“Rosy” 	✖ 	✖ 	✖ 	◯
2018	“love4eva” 	✖ 	✖ 	✖ 	◯
2019	“색깔 (Colors)” 	✖ 	✖ 	✖ 	◯
=== Sophia Pae===
Sophia Pae or Sophiya (소피야), born Bae Soo-jeong (배수정), is a South Korean singer-songwriter, vocal director, and background vocalist.
====Contribution to LOONA’s discography====
Year	Song 	Lyrics	Composition	Arrangement	Other
2018	“favOriTe”	✖ 	◯ 	✖ 	◯
Category:Lyricists
Category:Producers