勇敢兄弟
姜東至（，)，藝名勇敢兄弟（；英語：Brave Brothers），是韓國著名音樂製作人、作詞人及作曲家，也是Brave Entertainment的創立人。
姜東至最初是想與哥哥姜赫至（韓語：강흑철；藝名Black Soul）一同組成音樂團體而取藝名勇敢兄弟的，後來團體轉型，只有他一人沿用藝名勇敢兄弟。
姜東至的高中課程只讀了一年便退學，在少年時期是不良少年，犯罪記錄多達十二宗，曾入獄兩年六個月。
姜東至的哥哥是作曲家，他在哥哥的教導下開始創作音樂，只花了四個月學習準備便奪得Audition的金賞和其他一些奬項。姜東至原本想和哥哥組成音樂團體出道，所以起了藝名勇敢兄弟。哥哥去當兵了，他便用半年時間創作了八、九首歌曲投到YG Entertainment去，不久便簽約YG Entertainment了，但是過了兩年，當時流行新的歌曲風格，公司認為他出道無望，他非常憤怒，但公司認為他更適合當製作人，於是姜東至從此轉為一人體制，繼續沿用藝名勇敢兄弟，於2004年正式在YG Entertainment當音樂製作人，直至2008年離開。
2008年，勇敢兄弟和他哥哥一起合資創立了Brave Entertainment，他同時擔當很多組合的製作人。於2009年勇敢兄弟發行首張正規專輯《Attitude》，更開始推出自家公司藝人；2010年發行《The Classic》，之後也發行單曲專輯《Passionate》和《悲傷戀曲》等等。勇敢兄弟製作的大部份歌曲，都喜歡在前綴加上標誌性的「Brave Sound」作口號，和會讓人中毒的電音hook song。
DJ DOC-Together
One Two - Starry Night
One Two-Walala Lalale
One Two-Very good
45RPM-못 말리는 삼형제
45RPM-천하무적 야구단
BIGBANG-Intro(Put Your Hands Up)
BIGBANG-Babo/Fool
BIGBANG-Intro(Victory)
BIGBANG-Good Bye Baby
BIGBANG-Shake It(Feat. 李恩珠)
BIGBANG-Wrong Number
BIGBANG-Oh Ma Baby
BIGBANG-Act Like Nothing's Wrong
BIGBANG-Crazy Dog
BIGBANG-Last Farewell
BIGBANG-Wonderful
太陽-Hot
超新星-LaLaLa
超新星-On Days That I Miss You
超新星-Shining☆Star
超新星-Love Letter
超新星-Stupid love
YMGA-Let It Play(Feat. Jieun)
YMGA-Real Talk(Feat. 太陽)
U-KISS-Intro（Pump Pump）
U-KISS-Not Young
U-KISS-Give It To Me
U-KISS-Intro(On Fire)
U-KISS-I Like You
U-KISS-Talk To Me
U-KISS-Intro
U-KISS-ManManHaNi
U-KISS-OK!
U-KISS-Intro
U-KISS-Bingeul Bingeul
U-KISS-Without You
U-KISS-What
Touch-Nan
ZE:A-All Day Long
ZE:A-FIVE-The Day We Broke Up
ZE:A-Aftermath
ZE:A-Breath
ZE:A-Stagger
TEEN TOP-TEEN TOP
TEEN TOP-Crazy
TEEN TOP-Where's ma girl
TEEN TOP-Girl Friend
TEEN TOP-aRtisT
TEEN TOP-To You
TEEN TOP-Be Ma Girl
TEEN TOP-Party Tonight
TEEN TOP-No.1
TEEN TOP-Miss Right
TEEN TOP-I Wanna Love
TEEN TOP-Why
TEEN TOP-Hello
TEEN TOP-Mad at U
TEEN TOP-So Sweet
TEEN TOP-Get Crazy
TEEN TOP-Mr.Bang
Boyfriend-Boyfriend
Boyfriend-You&I
Electroboyz-Last Night
Electroboyz-Break Up(Feat. 李起光)
Electroboyz-Ma Boy2(Feat. 孝琳)
Battle-Big Chance Battle-Luv U BTOB-Beep Beep
Bigstar-Thinking of You
Bigstar-Full Moon Shine
SPEED-Pain the love of heart
舞歌黨-Nosenorabose
舞歌黨-O.A.O
Brown Eyed Girls-How Come
Davichi-Don`t Mov
4 Tomorrow-Tomorrow
After School-Play Girlz
After School-Because of You
After School-AH
After School-Bad Guy
After School-Diva
After School Red-Night into the sky
After School-8 Hot Girl
After School-First Love
After School-One Week
金泫雅-Ice Cream(Feat. Maboos)
4minute-What's Your Name?
4minute-Is It Poppin'?
4minute-Whatcha Doin' Today
4minute-Gain weight (살만찌고)
T-ara-So Crazy T-ara-What's My Name?
SISTAR-Push Push
SISTAR-Here We Come
SISTAR-Oh Baby
SISTAR19-We Never Go Alone
SISTAR-Drop the beat (feat. B2K)
SISTAR-Shady Girl
SISTAR-Mighty SISTAR
SISTAR-Over
SISTAR-How Dare You
SISTAR-Lets Get The Party Started
SISTAR-So Cool
SISTAR-Alone
SISTAR-Over, Oh Baby
SISTAR19-SISTAR19
SISTAR19-Gone Not Around Any Longer
SISTAR19-A Girl In Love
Stellar-Crying Stellar-Ringtone
Nine Muses-Sleepless Night
Dal★Shabet-Someone like U
F-VE DOLLS-Lip Stain
F-VE DOLLS-Good For You
RaNia-To Rock Da Show
RaNia-Pop Pop Pop
RaNia-Goodbye
Brave Girls-Intro(Ain't Nobody Like Brave Girls)
Brave Girls-So Sexy
Brave Girls-Do You Know?
Brave Girls-Easily (Feat. Skull)
Brave Girls-Nowadays, You
Brave Girls-Deepened
Brave Girls-High Heels
Brave Girls-Yoo-Hoo
Brave Girls-Rollin'
Brave Girls-Memory
Brave Girls-Outro (Rollin')
Brave Girls-Rollin' (New Version)
Brave Girls-We Ride
Brave Girls-Chi Mat Ba Ram
Brave Girls-Pool Party
Brave Girls-Summer by myself
C-Real-C-Real Intro
C-Real-No No No No No
Hello Venus-Sticky Sticky
Hello Venus-Wiggle Wiggle
Hello Venus-I'm ill
AOA-Miniskirt
AOA-Short Hair
AOA-My Soulmate
AOA-Like A Cat
AOA-AOA
AOA-Girl's Heart
AOA-Heart Attack
AOA-Excuse Me
Dazzling Red-This Person
BESTie-Love Options
Apink BnN-My Darling
SPICA.S-Like A Cat
高耀太-Good Good Time
高耀太-Say That Again
A-Force-Wonder Woman
曹成模-Mr. Flower
曹成模-More & More(Feat. Electroboyz)
曹成模-Meet Brave
李玟雨-Don't Trust Men(Feat. Big Tone)
金炯完-The Secret (Narr. Tiffany)
吳鐘赫-Get Away(Feat. 朴嘉熙)
SE7EN-Interlude
SE7EN-Follow Me
SE7EN-Run(Feat. G-Dragon&太陽)
SE7EN-OhMa Girl
Masta Wu-울라라라(Feat. Red Roc)
Masta Wu-Cry(Feat. 이영현)
Masta Wu-껌(Feat. Teddy)
李昇基-Losing My Mind
EI-Remember
Red Roc-Bounce Back
李起光-Dancing Shoes
李起光-Wipe The Tears
吳亦凡-Bad Girl
YG-Cash Money(Feat. Brave Brothers)
Lexy-눈물 씻고 화장하고
Lexy-Above the Sky(Feat. 지은)
Lexy-Big Lexy
GUMMY-Looking In The Mirror(Feat. Red Roc)
GUMMY-여기까지만(Feat. Skull)
裴瑟琪-Tiresome(Feat. 河珠妍)DJ(Feat. Maboos)
青山黛瑪-Intro
青山黛瑪-Fallen Angel
青山黛瑪-My Sweetest Sin
李善美-Full Moon
孫淡妃-Bad Boy(Feat. Feat.$howgun)
孫淡妃-瘋了(Feat. Eric（隊長）)
孫淡妃-Saturday Night
孫淡妃-Dripping Tears
孫淡妃-Wanna Be With You
NS允智-DJ Don't Stop
NS允智-N To The S 윤지
NS允智-Just Dance
Juniel-Tomorrow
辛知勳-Hurtful
辛知勳-Fake It
朴孝敏-Nice Body
朴孝敏-Fake It
孝琳-One Way Love
張根碩&孝琳-Magic Drag
金姸兒&SISTAR&Electroboyz-Super Girl
孫淡妃&After School-Amoled 金亨俊-Midnight Passes