garcia, hart, kaukonen, & casady jam at the final show by the original country joe & the fish lineup, fillmore west, january '69 (headlining over led zeppelin). more coherent than you'd expect! https://youtu.be/ayCupYA4DBM
@corry342.bsky.social pieces it together: https://hooterollin.blogspot.com/2016/01/fillmore-west-january-12-1969-country.html