On August 5, 2013, George M. Duke died aged 67. He was a singer-songwriter, record producer, arranger, musician (keyboards), and professor of music. He worked with numerous artists such as Frank Zappa, Cannonball Adderley, John Heard, Nat Adderley, Stanley Clarke, Leon “Ndugu” Chancler, Lynn Davis, Napoleon Murphy Brock, Billy Cobham, Sheila Escovedo, Jeffrey Osborne, Earth Wind & Fire, Kirk Whalum, Dianne Reeves, Marcus Miller, Flora Purim, and Al Jarreau.