At 36 minutes, the first part of the Rainbow concert is longer than Rubycon in its entirety. Group improvisation inevitably gives rise to longueurs, but these musicians had a rare empathy and sense of ...

Tangerine Dream’s Edgar Froese at The Royal Albert Hall, 2 April 1975. In front of him, a sequencer-equipped EMS synthesiser A little earlier, in 1971, the British company Electronic Music Studios ...