Tributes For Beastie Boys' Adam 'MCA' Yauch Pour In: Russell Simmons, Rev Run, Bill Adler, More

Tributes have been pouring in on Twitter and other sites in tribute to Adam "MCA" Yauch of the Beastie Boys, who passed away earlier today. We've collected a few below.

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R I P Adam... I'm devastated.Praying for Adam Yauch's family from the legendary Beastie Boys. Youll be missed!

- Rev Run (@RevRunWisdom) May 4, 2012

Yauch is gone. f--k.

- Questo of The Roots (@questlove) May 4, 2012

"There have been a lot of people who have molded the face and history of Hip Hop over the years, but no one can deny that my three dudes from New York City were paramount in taking it from a local thing and breaking it world wide. Last saw my man at the [Vh1] Hip Hop Honors Awards and he was upbeat, gracious and spiritual as always. R.I.P. to MCA...see you in the next one, brother." - Rakim, via HipHopDX.

"Adam was incredibly sweet and most sensitive artist who I loved dearly and was always inspired by his work. He will be missed by all of us." - Russell Simmons

RIP yauch and thank u mike and adam n adam 4 all of your help, the tours, the bball games, n great times. a humanitarian a tru friend

- QTip (@QtipTheAbstract) May 4, 2012

RIP Adam Yauch of the LEGENDARY Beastie Boys ... damn.

- Estelle (@EstelleDarlings) May 4, 2012

Devastated to hear that ASCAP member #AdamYauch of the @ BeastieBoys passed away today. Rest in peace, MCA. bit.ly/IKfhhW

- ASCAP (@ASCAP) May 4, 2012

RIP adam, so many great memories of you and the beastie shows we all did together

- KevinLyman (@KevinLyman) May 4, 2012

R.I.P. Adam Yauch - Beastie Boys. We've lost a visionary artist. Sitting in Brooklyn and feeling the impact like a black cloud.

- Amanda Palmer (@amandapalmer) May 4, 2012

Man...that one hurts. Our prayers go out to Adam Yauch and his family. #MCA #BEASTIEBOYS Rest Well.

- Def Jam Recordings (@DefJamRecords) May 4, 2012

I feel weak. TMZ: Adam Yauch, MCA from the Beastie Boys is dead at 47.

- Touré (@Toure) May 4, 2012

Rest In Peace Adam Yauch /MCA. 4ever somebody i looked up to & had the pleasure of meeting. Damn this bums me out, we lost one of the best

- Travis Barker (@travisbarker) May 4, 2012

Man. I was raised on the Beastie Boys. They were (and will always be) heroes for me & my bro. Soooo sad. #RIPMCA

- A-Trak (@atrak) May 4, 2012

Adam Yauch was an amazing artist and one of the nicest people I've ever met. His music was some of my favorite. Truly saddened. RIP MCA.

- Donald Glover (@DonaldGlover) May 4, 2012

so so sad about MCA gone but never forgotten your music will live on forever in our heads. ur first album was my soundtrack in high school

- Gary Richards (@DestructoHARD) May 4, 2012

"Adam Yauch as a young man may have been the 'Beastiest' of the Beastie Boys. Certainly, he was the angriest. In the wake of License To Ill, it was MCA who transformed himself the most. He evolved from his youthful punk rock anger into a peace-loving meditator. I personally was very inspired by his example." - Bill Adler, former executive for Def Jam when the Beastie Boys were on the label, told AllHipHop.com.

RIP Adam aka MCA...we will continue to Fight for our Rights...prayers and blessings from your original Def Jam family

- Kevin Liles (@KevinLiles1) May 4, 2012

RIP MCA U are a Legend and a pioneer. #BeastieBoys4life

- Snoop Dogg (@SnoopDogg) May 4, 2012

Rip dear Adam Yauch. Words can't express the sadness and loss. Ur humor, talent & gentle soul are just irreplacable. Be at peace brother.

- Tom Morello (@tmorello) May 4, 2012

A VERY SPECIAL R.I.P. TO ADAM YAUCH FROM THE BEASTIE BOYS MY BROTHER YOU ARE GONNA BE TRULY MISSED MY HEART IS HEAVY.....

- BIZ MARKIE (@BizMarkie) May 4, 2012

Brass Monkey was the worst tasting liquor ever. And we drank it anyway. Cuz the song was so jamming. RIP MCA. #BeastieBoys4Life

- Bun B (@BunBTrillOG) May 4, 2012

Crushed to hear the news of Adam Yauch's passing. A true pioneer of art. My thoughts and prayers are with his family and loved ones. #RIPMCA

- Justin Timberlake(@jtimberlake) May 4, 2012

Born and Bred in Brooklyn, U.S.A., they call him Adam Yauch, but he's M.C.A. RIP Adam. #beastieboys #nosleeptillbrooklyn

- Chuck Schumer (@ChuckSchumer) May 4, 2012

R.I.P. Adam Yauch Beastie Boys #RIPMCA

- MC HAMMER (@MCHammer) May 4, 2012

Struggling to find the words to describe the grief I feel over the passing of MCA. We love you Adam.

- Talib Kweli Greene (@TalibKweli) May 4, 2012

Mca Adam Yauch RIP... Im sittin in the former g son studios.. Flying the flag half mast today.... Rap/punk hero, philanthropist, legend

- dÃ"Â±pÃ-ÂŸo (@diplo) May 4, 2012