Conversation so far:
What was special about the band the grateful dead?
The grateful dead is known for its eclectic style, for live performances of lengthy instrumental jams, and for its devoted fan base, known as Deadheads.
what happened to Ron McKernan in 1966?
By the end of 1966, Garcia had improved his musical skills and wanted to assert himself more as a leader, changing the band's direction and reducing Ron McKernan's contributions.
Jerry Garcia was leader of what?
Jerome John Jerry Garcia was the lead guitarist and a vocalist with the band the Grateful Dead.

Question: how did he change the direction
Self-contained rewrite: how did Jerry Garcia change the direction of the band the Grateful Dead