In 1975, Yes was riding high on the wave of their progressive rock success, having just released the acclaimed album *Relayer*. This record showcased their bold experimentation with complex song structures, illustrating not just musical virtuosity but also a sense of adventurous spirit that was emblematic of the era. The live performance captured in the video "Yes 1975 Live in Concert 1 'Sound Chaser'" perfectly encapsulates this moment in time. It's interesting to note that *Relayer* featured the bold track "The Gates of Delirium," which brilliantly weaved themes of conflict and resolution in a grand musical tapestry—something the band often explored. The energy during live performances in '75 was electric, reflecting the group's unparalleled chemistry and the height of their creative powers, making this era a pivotal chapter in Yes's long and storied career. It's those moments where live magic happens, isn’t it? Feeling the audience's energy while the music soars is something special, truly.