# Brother Su

Kim Hyung-soo (Korean: 김형수; born December 22, 1990), better known as Brother Su (브라더수), is a South Korean singer-songwriter and record producer. Su debuted in 2010 and has been signed under Starship Entertainment's subsidiary label Starship X since 2015.

## Career
### 2010–2015: Early work and RealCollabo

Prior to his debut, Brother Su participated in "Christmas Card from Real Collabo" with his remix of "Winter Wonderland". The next year he officially debuted as RealCollabo's first singer with single "It was You". In the same year, he released another single "You Got Me".
The following years, Brother Su started featuring and writing for his label mates as well as other artists. Started with featuring in Mad Clown's "Basil", he was also featured in Andup's "Like This Right Now", Giriboy's "Player", Cheeze's "Papapa", d.ear's "We Need to Talk", Kebee's "Travel Bag", and Swings's "Two Thumbs". He produced label mate Siaena's "Sound of Rain" and Lovey's "Return", as well as Crucial Star's "Flat Shoes". In his early years as a lyricist, Brother Su teamed up with Ra.D for Jooyoung's "All of You" and "Hang Up the Phone", and Ra.D's "Thank You, Thank You".
On July 4, 2013 he released his first full album Paper, containing ten self-composed songs.
In 2015, Brother Su established his name as songwriter. His composed song, "I Need U" by BTS won first place in music programs. This success was followed with "Eat" by Zion.T, which did very well in South Korean digital music charts.
In the same year, he released his first mini album 사이 (Space) with six self-composed songs. "Space" was Brother Su's last release under RealCollabo. RealCollabo closed in October 2015.

### 2015–present: Starship Entertainment

On October 7, Starship Entertainment announced Brother Su has joined the company. A few days later, he released his first soundtrack, "You Don't Know Me" for MBC drama, She Was Pretty. This duet song with Soyou of Sistar was the song that introduced Brother Su to broader public.
Together with Jooyoung, Brother Su took part on collaboration with his old label mates Ra.D and d.ear, releasing "Draw You". It is a remake of d.ear's old song which is also the last release of RealCollabo. He was featured in San E & Mad Clown's "Lonely Animals" released in November 2015. Starship Planet's 2015 winter song "Softly" was his first participation in the company's family song.
In February 2016, Brother Su along with K.Will, Junggigo, and Jooyoung released a special Valentine's song, "Cook for Love". A few days later, he released a duet song with Mad Clown, "Like Romance Comics".

## Personal life

He has a younger sister, Lovey, who is also a singer-songwriter.
On April 24, 2023, Starship Entertainment announced that he will hold a wedding ceremony with singer-songwriter and lyricist Kim Jin-ah, who is three years his junior, on May 13 at a hotel in Jung-gu, Seoul.

## Discography
### Studio albums

| Title | Album details | Peak chart positions |
| Title | Album details | KOR |
| Paper | Released: July 4, 2013 Label: RealCollabo Format: CD, digital download Track list Intro (늦잠) 왜 이러니 (Why are You Like This) (feat. Swings) 소심해서 그래 (Because I'm Timid) (feat. Cheeze) 윗집 여자 (Girl Next Doorl) 좋대요 (Said Like You) I'm With You (feat. Ra.D) 다른 별 (Different Star) (feat. Lovey) 팔베개 (Arm Pillow) Outro (늦잠) It Was You (Bonus Track) | 93 |

### Extended plays

| Title | Album details | Peak chart positions |
| Title | Album details | KOR |
| Space (사이) | Released: June 19, 2015 Label: RealCollabo Format: CD, digital download Track list Intro: 사이 (Space) (Space) 점 (Dot) (feat. Lovey) 아쉬워서 그렇지 (Because I'm Sorry) (feat. Giriboy) 그럼 됐어 (That's Okay) 왜 하필 (Of All Odds, Why) 반나절만 (Only Half the Day) | 63 |

### Singles

| Title | Year | Peak chart positions | Sales | Album |
| Title | Year | KOR | Sales | Album |
| As lead artist |||||
| "It Was You" | 2010 | — | | Non-album singles |
| "You Got Me" | 2010 | — | | Non-album singles |
| "Girl Next Door" (윗집 여자) | 2013 | — | | Paper |
| "아쉬워서 그렇지" (Because I Feel Bad) (feat. Giriboy) | 2015 | — | KOR: 15,400 | Space |
| "Dot" (점) (feat. Lovey) | 2015 | — | | Space |
| "What's Wrong With U" (왜그러냐) (feat. Gaeko) | 2018 | — | | Non-album single |
| Collaborations |||||
| "Draw You" (너를 그리다) (with Ra.D, d.ear, Jooyoung) | 2015 | 25 | KOR: 51,818 | Non-album single |
| "Softly" (사르르) (with K.Will, Sistar, Boyfriend, Mad Clown, Junggigo, Jooyoung, Monsta X, Yoo Seung-woo, Exy) | 2015 | 24 | KOR: 154,049 | Starship Planet 2015 |
| "Cook for Love" (요리좀해요) (with K.Will, Junggigo, and Jooyoung) | 2016 | 23 | KOR: 72,767 | Non-album singles |
| "Like Romance Comics" (만화처럼) (with Mad Clown) | 2016 | 17 | KOR: 125,593 | Non-album singles |
| "Our Night Is More Beautiful Than Your Day" (우리의 밤은 당신의 낮보다 아름답다) (with Bomi, Namjoo, Chaeyeon, LE, Seokhoon, ₩uNo, Yang Da-il, Chancellor, Seo In-young, Kang Min-hee) | 2016 | 89 | KOR: 28,346 | Merry Summer |
| "Madeleine" (마들렌) (with I.M, feat. J.Han) | 2016 | — | | Non-album single |
| "Love Wishes" (누가 그래) (with Junggigo, Mad Clown, Yoo Seung-woo, Hyunseong, Kihyun) | 2016 | 77 | KOR: 48,485 | Starship Planet 2016 |
| "Christmas Day" (with K.Will, Soyou, Boyfriend, Monsta X, Cosmic Girls, Mad Clown, Junggigo, #Gun, Yoo Seung-woo, Mind U, Duetto, Jeong Se-woon, Lee Kwang-hyun) | 2017 | 63 | KOR: 49,521 | Starship Planet 2017 |
| "Christmas Time" (벌써 크리스마스) (with Duetto, Mind U, Yoo Seung-woo, Monsta X, Jeong Se-woon, K.Will, Boyfriend, Soyou, Cosmic Girls) | 2018 | 93 | | Starship Planet 2018 |
| "—" denotes release did not chart. |||||

### Soundtrack appearances

| Title | Year | Peak chart positions | Sales | Album |
| Title | Year | KOR | Sales | Album |
| "You Don't Know Me" (모르나봐) (with Soyou) | 2015 | 4 | KOR: 734,063 | She Was Pretty OST |
| "Come to Me" (내게 올래요) | 2016 | 87 | KOR: 42,407 | Don't Dare to Dream OST |
| "Toy" (서툰 고백) (with Yoo Yeon-jung) | 2017 | — | | Love Playlist 2 OST |
| "While You Were Sleeping" (당신이 잠든 사이에) (with SE O) | 2017 | — | | While You Were Sleeping OST |
| "—" denotes release did not chart. |||||

## Production credits

| Year | Title | Artist | Album | Role |
| 2010 | "It Was You" | Brother Su | Non-album single | Composer, lyricist, arranger |
| 2012 | "빗소리가 (Sound of Rain)" | Siaena | Café de Siaena | Arranger |
| 2012 | "All of You" | Jooyoung | From Me to You | Co-lyricist |
| 2012 | "Hang Up the Phone" featuring Ra.D & Inbal | Jooyoung | From Me to You | Co-lyricist |
| 2012 | "Flat Shoes" | Crucial Star | Fall | Producer |
| 2013 | "We Need to Talk" | d.ear | Love Graphy | Co-lyricist |
| 2013 | "돌려줘 (Return)" | Lovey | Non-album single | Composer, lyricist, arranger |
| 2013 | "늦잠 (Intro)" | Brother Su | Paper | Composer, lyricist, arranger |
| 2013 | "왜 이러니 (Why Are You Like This)" | Brother Su | Paper | Composer, co-lyricist, arranger |
| 2013 | "소심해서 그래 (Because I'm Timid)" featuring Dalcong | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "윗집 여자 (Upstairs Neighbor Girl)" | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "좋대요 (Said Like You)" | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "I'm With You" featuring Ra.D | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "다른 별 (Different Star)" featuring Lovey | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "팔베개 (Arm Pillow)" | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "늦잠 (Outro)" | Brother Su | Paper | Composer, lyricist, co-arranger |
| 2013 | "고마워 고마워 (Thank You, Thank You)" | Ra.D | 작은 이야기 (Small Story) | Co-lyricist |
| 2013 | "누군가 필요해 (I Need Someone)" featuring Brother Su | Ra.D | Non-album single | Co-composer, co-lyricist |
| 2014 | "Super Crucial Rap 2" featuring DJ Wegun | Crucial Star | Non-album single | Composer, arranger |
| 2014 | "겨울인데 (It's Winter)" featuring Tim | Pento | Non-album single | Arranger |
| 2014 | "클럽이라도 좀 가 (At Least Go to Club)" | Heize | Maktoob | Co-composer, arranger |
| 2014 | "Good Life" featuring D.Meanor & Brother Su | Konsoul | Non-album single | Co-lyricist |
| 2014 | "여전해 (As Ever)" | AndUp | Non-album single | Co-composer, arranger |
| 2014 | "Give It 2 U" | Glam | Non-album single | Composer, lyricist |
| 2014 | "좋아요 (I Like It) (Slow Jam Remix)" | BTS | Skool Luv Affair: Special Addition | Co-composer, co-lyricist |
| 2014 | "Best Girl" | Ulala Session | reJOYce | Co-lyricist |
| 2014 | "그녀는 예뻐 (She is Pretty)" | Ulala Session | reJOYce | Co-lyricist |
| 2014 | "Heartache" | Ulala Session | reJOYce | Co-lyricist |
| 2015 | "왕복 30분 (Round Trip 30 Minutes)" featuring Shin Ji Soo | Giriboy | 성인식 (Coming of Age Ceremony) | Co-composer, co-arranger |
| 2015 | "비가 내려와 (It's Raining)" | Zia, Lee Hyun | Non-album single | Co-composer, co-lyricist |
| 2015 | "I Need U" | BTS | The Most Beautiful Moment In Life, Part 1 | Co-composer, co-lyricist |
| 2015 | "꺼내 먹어요 (Eat)" | Zion.T | Non-album single | Co-composer, co-arranger |
| 2015 | "Intro: 사이 (Space)" | Brother Su | 사이 (Space) | Composer, arranger |
| 2015 | "점 (Dot)" featuring Lovey | Brother Su | 사이 (Space) | Composer, lyricist, co-arranger |
| 2015 | "아쉬워서 그렇지 (Because I'm Sorry)" featuring Giriboy | Brother Su | 사이 (Space) | Composer, co-lyricist, arranger |
| 2015 | "그럼 됐어 (That's Okay)" | Brother Su | 사이 (Space) | Composer, lyricist, co-arranger |
| 2015 | "왜 하필 (Of All Odds, Why)" | Brother Su | 사이 (Space) | Composer, lyricist, co-arranger |
| 2015 | "반나절만 (Only Half the Day)" | Brother Su | 사이 (Space) | Composer, lyricist, arranger |
| 2015 | "여전히 (Still)" | Ra.D | Non-album single | Composer, lyricist |
| 2015 | "어깨 (Lean on Me)" | Soyou & Kwon Jung-yeol | Non-album single | Lyricist |
| 2015 | "Beautiful Lady" | Jonghyun | Oh My Venus OST Pt. 1 | Co-lyricist |
| 2015 | "Butterfly" | BTS | The Most Beautiful Moment In Life, Part 2 | Co-composer, co-lyricist, co-arranger |
| 2015 | "Whalien 52" | BTS | The Most Beautiful Moment In Life, Part 2 | Co-composer, co-lyricist, co-arranger |
| 2015 | "Outro: House of Cards" | BTS | The Most Beautiful Moment In Life, Part 2 | Co-composer, co-lyricist, co-arranger |
| 2015 | "호구 (Hogu)" featuring Brother Su | Giriboy | Non-album single | Co-composer, co-lyricist |
| 2016 | "그 벤치 (That Bench)" | Crucial Star | Non-album single | Co-composer, co-arranger |
| 2016 | "시간낭비 (Time Machine)" featuring EZ | Crucial Star | Non-album single | Co-composer, co-arranger |
| 2016 | "뭐 어때 (Whatever)" featuring Crucial Star | Yoo Seung-woo | Pit a Pat | Co-lyricist |
| 2016 | "선 (45.7cm)" featuring Oohyo | Yoo Seung-woo | Pit a Pat | Composer, lyricist, co-arranger |
| 2016 | "만화처럼 (Like Romance Comics)" | Mad Clown & Brother Su | Non-album single | Co-composer, co-arranger |
| 2016 | "야 하고 싶어 (Call You Bae)" | Jimin & Xiumin | Non-album single | Co-lyricist |
| 2016 | "Interview" | Eric Nam | Interview | Composer, lyricist, arranger |
| 2016 | "돌아오지마 (Don't Come Back)" featuring Junhyung | Heize | Non-album single | Co-composer, arranger |
| 2016 | "문 열어봐 (Here I Am)" | Yesung | Here I Am | Co-composer, co-lyricist |
| 2016 | "어떤 말로도 (Confession)" featuring Chanyeol | Yesung | Here I Am | Co-composer, co-lyricist |
| 2016 | "힘 (Strength)" featuring Hanhae & Brother Su | Crucial Star | Non-album single | Co-composer, co-lyricist |
| 2016 | "걸어 (All In)" | Monsta X | The Clan Pt. 1 Lost | Co-composer |
| 2016 | "천천히 나와요 (Come Slowly)" | Lovey | 24 | Arranger |
| 2016 | "너만이 (Only U)" featuring Heize | Yoo Seung-woo | Non-album single | Composer, Co-lyricist, Arranger |
| 2016 | "여자 사람 친구 (She)" | Vromance | The Action | Co-lyricist |
| 2016 | "우리 둘 (Runnin')" | Henry and Soyou | | Co-lyricist |
| 2016 | "마들렌 (Madeleine)" featuring J.Han | I.M and Brother Su | | Co-lyricist |
| 2016 | "이뻐서 힘들어" featuring Geeks' Lui, Brother Su, Lovey | Crucial Star | Fall 2 | Co-lyricist |
| 2016 | "One Step" featuring Jay Park | Hyolyn | It's Me | Co-lyricist |
| 2016 | "Love Like This" featuring Dok2 | Hyolyn | It's Me | Co-lyricist |
| 2016 | "꺼져 (Back Off)" | Hyolyn | It's Me | Co-lyricist |
| 2016 | "Dope" | Hyolyn | It's Me | Co-lyricist |
| 2016 | "누가 그래 (Love Wishes)" | Junggigo, Mad Clown, Yoo Seungwoo, Brother Su, Hyunsung, Kihyun | Starship Planet 2016 | Co-lyricist |
| 2017 | "보여줄 때" | Kim Taegyun | 녹색이념 | Co-composer, arranger |
| 2017 | "이리 와 (Hug U)" | Cosmic Girls | From. WJSN | Composer, co-lyricist, arranger |
| 2017 | "Let Me Love You" | Junggigo, Chanyeol | Non-album single | Co-lyricist, co-composer |
| 2017 | "Oi" | Monsta X | The Clan Pt. 2.5: The Final Chapter | Co-lyricist, co-composer |
| 2017 | "Fall in Love" | K.Will | The 4th Album Pt.1 Nonfiction | Co-lyricist, co-composer |
| 2017 | "As If It's Your Last" | Blackpink | Non-album single | Co-lyricist |
| 2018 | "나눠서 좋아해줘" | Jina | 나눠서 좋아해줘 | Co-arranger |
| 2018 | "20 Something (PROD. 정동환, Jeong Se-woon)" | Jeong Se-woon | Another | Co-lyricist |
| 2018 | "Eye 2 Eye (PROD. Caesar & Loui)" | Jeong Se-woon | Another | Co-lyricist |
| 2018 | "나만 없어 (Feat. Brother Su)" | Mind U | 퍼즐 - 두 번째 조각 | Co-composer, co-lyricist, arranger |
| 2018 | "Underwater" | Monsta X | Take.1 Are You There? | Co-composer, co-lyricist |
| 2018 | "착해지지 마요 (Feat. 화사 of 마마무)" | K.Will | The 4th Album Part.2 [想像; Mood Indigo] | Lyricist |
| 2018 | "Welcome To My Playground" | NCT 127 | Regulate | Co-composer, co-lyricist |
| 2018 | "Later" | Taeil | Non-album single | Composer, Lyricist, arranger |
| 2019 | "12 O'clock" | Cosmic Girls | WJ Stay? | Co-composer, co-lyricist |
| 2019 | "No Reason" | Monsta X | Take.2 We Are Here | Co-composer, co-lyricist |
| 2019 | "Stealer" | Monsta X | Take.2 We Are Here | Co-composer |
| 2019 | "Party Time" | Monsta X | Take.2 We Are Here | Co-composer, co-lyricist |
| 2019 | "Find You" | Monsta X | Follow: Find You | Co-lyricist |
| 2019 | "Follow" | Monsta X | Follow: Find You | Co-lyricist |
| 2019 | "Monsta Truck" | Monsta X | Follow: Find You | Co-lyricist |
| 2019 | "Mirror" | Monsta X | Follow: Find You | Co-lyricist, Co-composer |
| 2019 | "Selfish" | Kang Min-kyung | Kang Min Kyung Vol. 1 | Co-composer |
| 2019 | "너여서 (My Youth)" | Kang Min-kyung | Kang Min Kyung Vol. 1 | Composer, Lyricist, arranger |
| 2019 | "Slow" | Bumsoo Kim | New.Make20 #5 | Lyricist |
| 2019 | "D+1" | Everglow | Arrival of Everglow | Lyricist |
| 2019 | "Going Home" | Jeong Se-woon | Plus Minus Zero | Co-arranger |
| 2019 | "I'm Home" (그래) | Minho | SM Station: Season 3 | Co-arranger |
| 2019 | "Birthday" | Jeon Somi | XOXO | Co-lyricist |
| 2020 | "Cloud 9" | Cravity | Season 1. Hideout: Remember Who We Are | Co-lyricist, Co-composer |
| 2020 | "Flame" | Cravity | Season 2. Hideout: The New Day We Step Into | Co-lyricist |
| 2020 | "Fantasia" | Monsta X | Fantasia X | Co-lyricist |
| 2020 | "It Ain't Over" | Monsta X | Fantasia X | Co-lyricist, Co-composer |
| 2020 | "Love Killa" | Monsta X | Fatal Love | Co-composer |
| 2021 | "Blue" | Wonho | Blue Letter | Co-lyricist |
| 2021 | "Flash" | Wonho | Love Synonym Pt.2: Right for Us | Co-lyricist, Co-composer, Arranger |
| 2021 | "Don't Cry, My Love" | Cha Eun-woo | Under the Oak Tree OST | Co-lyricist |
| 2021 | "Easy" | WJSN The Black | My Attitude | Co-lyricist |
| 2021 | "Kiss or Death" | Monsta X | Non-album single | Co-composer |
| 2021 | "Rush Hour" | Monsta X | No Limit | Co-lyricist, Co-composer |
| 2022 | "Softly" | Miyeon | My | Lyricist |
| 2022 | ", (Comma)" | Kihyun | Voyager | Co-lyricist |
| 2022 | "Adrenaline" | Cravity | Liberty: In Our Cosmos | Co-lyricist |
| 2022 | "Party Rock" | Cravity | New Wave | Co-lyricist |
| 2022 | "Automatic" | Cravity | New Wave | Co-lyricist, Co-composer |
| 2022 | "Cause Of You" | Kihyun | Youth | Co-lyricist, Co-composer, Arranging |
| 2022 | "Eye on You" | Wonho | Obsession | Co-lyricist |
| 2022 | "Crazy" | Wonho | Facade | Co-lyricist |
| 2022 | "Don't Regret" | Wonho | Bittersweet | Co-lyricist |
| 2022 | "Love" | Monsta X | Shape of Love | Co-lyricist, Co-composer |
| 2022 | "Paradise" | LimeLight | Limelight | Co-lyricist, Co-composer |
| 2023 | "Beautiful Liar" | Monsta X | Reason | Co-lyricist |
| 2023 | "Slow Dance" | Shownu X Hyungwon | The Unseen | Lyricist |
| 2023 | "Break It Down" | Choi Yoo-jung | Cold Blood Intern OST Part 1 | Co-lyricist |
| 2023 | "Deal" | Choi Young-jae | Do It | Co-lyricist, Co-composer |
| 2023 | "Fluffy" | Choi Young-jae | Do It | Co-lyricist, Co-composer, Arranger |
| 2023 | "Snooze" | Choi Young-jae | Do It | Lyricist |
| 2024 | "No Girl" | Seola | Inside Out | Co-lyricist, Co-composer, Arranger |
| 2024 | "Plot Twist" | TWS | Sparking Blue | Co-lyricist, Co-composer |