Santana... Soul Sacrafice Live at Woodstock. Drum solo blew my mind on LSD. Tighest bass, organ, (yes organ) drums, congas and timbales ever. Carlos' guitar playing just an afterthought in this jam....
Alvin Lee and Ten Years After. "Going Home". also live at Woodstock fastest guitar picking ever. Blows all.
Most underated bands of all time the 2 above.