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.

Question: leader of what?
Self-contained rewrite: Jerry Garcia was leader of what?