Conversation so far:
Eas Hooker 'n Heat an album by Canned Heat?
Hooker 'n Heat is a double album released by blues musician John Lee Hooker and blues-rock band Canned Heat in early 1971.
What year did Wilson of Canned Heat die?
On September 3, 1970, just prior to leaving for a festival in Berlin, the band learned of Wilson's death by barbiturate overdose.

Question: how did he die
Self-contained rewrite: How did Wilson of Canned Heat die?