53 years ago today, William "Fairplay" Kreutzmann brought his new friend Mickey Hart along to a gig at the Straight Theater; in the 2nd set, Mickey sat in for an "Alligator" that morphed into "Caution (Do Not Stop On Tracks)" and ended up lasting 2 hours - or, just long enough for the esteemed Mr. Hart to become a member of the Grateful Dead.
Peter