In January 1975, when Yes took to the stage at Wembley in London, they were riding high on the wave of their album "Relayer," which had been released just a few months prior, in November 1974. This album marked a significant moment in their evolution, as it was the first to feature the talented keyboardist Patrick Moraz, who brought a fresh dynamics and jazz-inflected style to their sound. This live performance showcases their distinctive blend of progressive rock, filled with intricate instrumentals and soaring vocals, captivating audiences with both lyrical depth and musical complexity. A fascinating tidbit: "Relayer" was notable for its ambitious length and experimental tracks, which really shone through in a live setting, allowing fans to experience the expansive soundscapes and improvisational flair that Yes was known for. It’s no wonder that concerts from this era remain cherished by fans; they captured a pivotal moment in Yes's adventurous journey through music.