Here's more on the Switzerland 1974 release. This is a long way from Robert Wyatt, but I really like this incarnation of the band.
"On July 4, 1974, Soft Machine were invited to perform at the prestigious Montreux Jazz Festival in Switzerland, sharing the spotlight with such headliners as Billy Cobham’s Spectrum, Larry Coryell’s Eleventh House and the Mahavishnu Orchestra. This alone was evidence of the band being a dominant presence on the now widely popular jazz-rock scene, which had evolved out of the unique and edgy sound that the band had pioneered a few years before...
http://www.cuneiformrecords.com/bandshtml/softmachine.html