Lynn Dobson rarely played with Soft Machine. I believe he only recorded on "Third" although he could have done other studio work with them in the early 70s. The groove that Hugh Hopper and Mike Ratledge ride-out is only 24 bars on the original recording of "Out-Bloody-Rageous" but is here extended into six minutes, allowing Lynn Dobson to play a wonderful extended solo.
This track demonstrates that Mr. Jarrett can rip it on a soprano sax (1st solo) while playing over one of the hardest bass lines Charlie Haden ever recorded.