The 1970s are widely regarded as the golden age of prog rock. Many bands to emerge during that era had tremendous commercial and critical success. Emerson, Lake and Palmer! Genesis! King Crimson! These bands represented the most innovative edge of the genre, pushing musical and lyrical boundaries by combining standard blues-based song structures with sweeping compositions featuring musical arrangements most often found in classical pieces.
But no prog-rock band has had the longevity or breadth of experience as Yes, which celebrated its 50th anniversary at the Warner Theatre on Monday.