Slideshow posted in Photos | Friday, May 04, 2012
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M.C. Hammer to his Twitter account to express his sadness over Adam Yauch's death.
'R.I.P. Adam Yauch Beastie Boys #RIPMCA,' he Tweeted on May 4.
(Pictured: M.C. Hammer appears in a still from the 2009 TV series, 'Hammertime.')