Siblings Shannon Campbell (front L) and Ashley Campbell (R), of the country duo "Victoria Ghost", perform in tribute to their father Glen Campbell, as songwriter Jimmy Webb (back L) and actor Keith ... more 
Siblings Shannon Campbell (front L) and Ashley Campbell (R), of the country duo "Victoria Ghost", perform in tribute to their father Glen Campbell, as songwriter Jimmy Webb (back L) and actor Keith Carradine (back C) sit behind them during the 22nd annual "A Night at Sardi's" to benefit the Alzheimer's Association at the Beverly Hilton Hotel in Beverly Hills, California, March 26, 2014. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) less 
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Reuters | Photo By DANNY MOLOSHOK / REUTERS
Thu, Mar 27, 2014 3:58 AM EDT