Taken from their debut album, Hush starts off strong with a heavy guitar riff that has been distorted. Distortion is a tool that changes the frequency of a guitar and creates an almost “dirty” sound. A keyboard plays alongside the initial riff and has a pipe organ sound to it that moves it from higher to lower frequencies very quickly. A chorus of men singing is reminiscent of the 1960’s psychedelic rock songs that had a “happy” feel to them. Then, the guitar takes a much more psychedelic turn to it, drastically increasing and decreasing in the amount of distortion. Nearing the end of the song, the keyboard becomes more prominent and there is a minute-long keyboard solo. This solo has rapid sequences of notes that have the pipe organ-feel to them and are layered with other notes.
Deep Purple went on to produce a wide variety of sounds that were on the heavier side of psychedelic rock. They would go on to be pioneers of hard rock and heavy metal, both of which often have elements of psychedelic rock in them.