Donald Pearson — audio engineer for Grateful Dead RIP de Bel7 · 4 janvier 2015 Donald Pearson R I P Donald Pearson — audio engineer for Grateful Dead, Olympics, pope Donald Michael Pearson, a Bay Area sound engineer whose drive for perfectionism landed him gigs with everyone from the Grateful Dead to the pope, died unexpectedly Monday at Marin General Hospital during heart surgery. He was 63. SFGATE.COM