Jesse Jarnow pointed out that Phil Lesh takes over the Grateful Dead for six, extended, abstract bass adventures during the December 1973 shows.
Here are those passages, in chronological order, gently segued, totaling 39 minutes. The first one gives you a couple of minutes to orient yourself before Godzilla reaches the power station.
These are not bass solos (other players present), but Phil steps beyond the normal zones of 1973-1974 collective abstraction to establish his own soundscape plots - dropping bombs, embracing distortion, shifting an octave, firing off drones and tones. The band generally steps back to give him a canvas, with much of the accompaniment minimal and often gentle. It is paradoxically violent and soothing music.
39-minute mp3 mix zipped up here (dates/cities included in song titles)
Cover art: Howard V. Brown for the May 1934 issue of Astounding Stories. It reminds me a little bit of the cover of Neil Young’s abstract distortion album “Arc,” while also inviting you to hear this music in color.