Ummagumma splits Pink Floyd into two contradictory impulses: one disc captures their volcanic live sprawl at peak intensity, stretching Barrett-era psychedelia into vast improvisational terrain. The other grants each member solo space, yielding results from pastoral folk to concrete collages of Scottish gibberish.

It's simultaneously their most generous and scattered statement, a double album that documents both their concert power and what happens when democratic ideals meet experimental indulgence. The live performances endure; the studio experiments remain fascinatingly uneven, marking the restless transition between acid-rock and progressive ambition.