 By this point, Bruford was increasingly aware of the technical limitations of the electronic Simmons drums he had once championed.Although arguably the most advanced electronic percussion set in existence, the Simmons kit's pioneering technology meant that it was difficult to service, fragile (as evidenced by frequent damage at airport baggage reclaim), unpredictable and unreliable (as had been humiliatingly demonstrated at the Yes concert in Madison Square Garden).Furthermore, it enforced a rigidity of playing style that handicapped both Bruford and the musicians he worked with.