One of the greats, Leslie West, died of heart failure.
I just read an article on him in Rolling Stone, here's a funny quote:
A turning point, he once said, was seeing Cream at the Village Theatre (later the Fillmore East) in 1967. “My brother said to me, ‘Let’s take some acid before we go,’ ” West told Blues Rock Review in 2015. “So we took LSD and all of a sudden the curtain opens up and I hear them playing ‘Sunshine of Your Love’ and I see Eric Clapton and his buckskin jacket. I said, ‘Oh my God, we really suck.’ After that, I started really practicing and practicing.”