Adam Yauch aka MCA of the Beastie Boys dead at 47: Celebrity reactions

10 of 20: Benji Madden of the band 'Good Charlotte' Tweeted his sadness over the loss of rapper MCA.

This news hits hard. The Beastie Boys are 1of the reasons I do music&MCA was the captain. Thanx for everythin MCA. Rest in Peace#RIPMCA,' he Tweeted.

(Pictured:Joel (R) and Benji (L) Madden in a Twitter photo.) ( Photo / Twitpic.com/7h5hm)