Not a sad thing, he lived a better 57 years than most people would live in multiple lives. Totally achieved what all music artists want and left awesome music for people to listen to with or without him in this world.
Some more news on this for anyone who's interested:
From
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Associated Press writers Paul Newberry in Atlanta, and Kevin Burbach and Doug Glass in Minneapolis contributed to this report, along with AP researcher Rhonda Shafner in New York.