• rapper Heavy D, also known as Dwight Arrington Myers, performs during the BET Hip Hop Awards in Atlanta, GA on October 1, 2011.

    Rap has in recent years seen a series of notable rappers die of drug- and health-related causes.

    LAST UPDATE : May 07, 2013, 11:09 AM EDT
  • This Sept. 6, 2012 file photograph shows singer Glen Campbell performing during his Goodbye Tour in Little Rock, Arkansas.

    Glen Campbell's Alzheimer's disease has progressed too far to allow him to continue touring.

    LAST UPDATE : Apr 22, 2013, 4:58 PM EDT